Home / 4,788,128.70-7,182,193.05-2,996,538.30

Finding the Fourth Proportional to 4,788,128.70, 7,182,193.05 and 2,996,538.30

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Solution

The fourth proportional to 4,788,128.70, 7,182,193.05 and 2,996,538.30 is: 4,494,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,788,128.70 : 7,182,193.05 = 2,996,538.30 : x
  2. Step 2: Convert to fraction form
    4,788,128.70/7,182,193.05 = 2,996,538.30/x
  3. Step 3: Cross multiply
    4,788,128.70x = 7,182,193.05 × 2,996,538.30
  4. Step 4: Simplify right side
    4,788,128.70x = 21,521,716,552,318.81
  5. Step 5: Solve for x
    x = 21,521,716,552,318.81/4,788,128.70
  6. Step 6: Final answer
    x = 4,494,807.45

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Double scale
Find fourth proportional to 4,788,129.70, 7,182,194.55 and 2,996,539.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.