Home / 660,502,476.90-990,753,715.35-200,439,908.10

Finding the Fourth Proportional to 660,502,476.90, 990,753,715.35 and 200,439,908.10

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Solution

The fourth proportional to 660,502,476.90, 990,753,715.35 and 200,439,908.10 is: 300,659,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,502,476.90 : 990,753,715.35 = 200,439,908.10 : x
  2. Step 2: Convert to fraction form
    660,502,476.90/990,753,715.35 = 200,439,908.10/x
  3. Step 3: Cross multiply
    660,502,476.90x = 990,753,715.35 × 200,439,908.10
  4. Step 4: Simplify right side
    660,502,476.90x = 198,586,583,654,487,552
  5. Step 5: Solve for x
    x = 198,586,583,654,487,552/660,502,476.90
  6. Step 6: Final answer
    x = 300,659,862.15

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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.