Home / 1,208,110,709.70-1,666,248,287.58-784,860,741.30

Finding the Fourth Proportional to 1,208,110,709.70, 1,666,248,287.58 and 784,860,741.30

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Solution

The fourth proportional to 1,208,110,709.70, 1,666,248,287.58 and 784,860,741.30 is: 1,082,494,224.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208,110,709.70 : 1,666,248,287.58 = 784,860,741.30 : x
  2. Step 2: Convert to fraction form
    1,208,110,709.70/1,666,248,287.58 = 784,860,741.30/x
  3. Step 3: Cross multiply
    1,208,110,709.70x = 1,666,248,287.58 × 784,860,741.30
  4. Step 4: Simplify right side
    1,208,110,709.70x = 1,307,772,866,179,894,272
  5. Step 5: Solve for x
    x = 1,307,772,866,179,894,272/1,208,110,709.70
  6. Step 6: Final answer
    x = 1,082,494,224.81

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Double scale
Find fourth proportional to 1,208,110,710.70, 1,666,248,288.96 and 784,860,742.30
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.