Home / 625,428,964.58-862,733,384.03-390,071,015.69

Finding the Fourth Proportional to 625,428,964.58, 862,733,384.03 and 390,071,015.69

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Solution

The fourth proportional to 625,428,964.58, 862,733,384.03 and 390,071,015.69 is: 538,074,356.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,428,964.58 : 862,733,384.03 = 390,071,015.69 : x
  2. Step 2: Convert to fraction form
    625,428,964.58/862,733,384.03 = 390,071,015.69/x
  3. Step 3: Cross multiply
    625,428,964.58x = 862,733,384.03 × 390,071,015.69
  4. Step 4: Simplify right side
    625,428,964.58x = 336,527,287,374,914,432
  5. Step 5: Solve for x
    x = 336,527,287,374,914,432/625,428,964.58
  6. Step 6: Final answer
    x = 538,074,356.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.