Home / 987,936,006.40-1,481,904,009.60-260,924,718.40

Finding the Fourth Proportional to 987,936,006.40, 1,481,904,009.60 and 260,924,718.40

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Solution

The fourth proportional to 987,936,006.40, 1,481,904,009.60 and 260,924,718.40 is: 391,387,077.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,936,006.40 : 1,481,904,009.60 = 260,924,718.40 : x
  2. Step 2: Convert to fraction form
    987,936,006.40/1,481,904,009.60 = 260,924,718.40/x
  3. Step 3: Cross multiply
    987,936,006.40x = 1,481,904,009.60 × 260,924,718.40
  4. Step 4: Simplify right side
    987,936,006.40x = 386,665,386,400,710,912
  5. Step 5: Solve for x
    x = 386,665,386,400,710,912/987,936,006.40
  6. Step 6: Final answer
    x = 391,387,077.60

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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.