Home / 1,319,150,431.90-1,980,678,201.45-738,045,286.30

Finding the Fourth Proportional to 1,319,150,431.90, 1,980,678,201.45 and 738,045,286.30

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Solution

The fourth proportional to 1,319,150,431.90, 1,980,678,201.45 and 738,045,286.30 is: 1,108,160,354.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,150,431.90 : 1,980,678,201.45 = 738,045,286.30 : x
  2. Step 2: Convert to fraction form
    1,319,150,431.90/1,980,678,201.45 = 738,045,286.30/x
  3. Step 3: Cross multiply
    1,319,150,431.90x = 1,980,678,201.45 × 738,045,286.30
  4. Step 4: Simplify right side
    1,319,150,431.90x = 1,461,830,210,257,334,272
  5. Step 5: Solve for x
    x = 1,461,830,210,257,334,272/1,319,150,431.90
  6. Step 6: Final answer
    x = 1,108,160,354.50

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Double scale
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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.