Home / 390,944,937.84-586,416,891.60-99,812,110.20

Finding the Fourth Proportional to 390,944,937.84, 586,416,891.60 and 99,812,110.20

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Solution

The fourth proportional to 390,944,937.84, 586,416,891.60 and 99,812,110.20 is: 149,718,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,944,937.84 : 586,416,891.60 = 99,812,110.20 : x
  2. Step 2: Convert to fraction form
    390,944,937.84/586,416,891.60 = 99,812,110.20/x
  3. Step 3: Cross multiply
    390,944,937.84x = 586,416,891.60 × 99,812,110.20
  4. Step 4: Simplify right side
    390,944,937.84x = 58,531,507,407,520,656
  5. Step 5: Solve for x
    x = 58,531,507,407,520,656/390,944,937.84
  6. Step 6: Final answer
    x = 149,718,033.77

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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.