Home / 870,940,998.40-1,306,411,497.60-353,619,270.40

Finding the Fourth Proportional to 870,940,998.40, 1,306,411,497.60 and 353,619,270.40

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Solution

The fourth proportional to 870,940,998.40, 1,306,411,497.60 and 353,619,270.40 is: 530,428,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,940,998.40 : 1,306,411,497.60 = 353,619,270.40 : x
  2. Step 2: Convert to fraction form
    870,940,998.40/1,306,411,497.60 = 353,619,270.40/x
  3. Step 3: Cross multiply
    870,940,998.40x = 1,306,411,497.60 × 353,619,270.40
  4. Step 4: Simplify right side
    870,940,998.40x = 461,972,280,623,483,264
  5. Step 5: Solve for x
    x = 461,972,280,623,483,264/870,940,998.40
  6. Step 6: Final answer
    x = 530,428,905.60

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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.