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Finding the Fourth Proportional to 521,500.64, 719,995.92 and 358,437.92

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Solution

The fourth proportional to 521,500.64, 719,995.92 and 358,437.92 is: 494,867.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,500.64 : 719,995.92 = 358,437.92 : x
  2. Step 2: Convert to fraction form
    521,500.64/719,995.92 = 358,437.92/x
  3. Step 3: Cross multiply
    521,500.64x = 719,995.92 × 358,437.92
  4. Step 4: Simplify right side
    521,500.64x = 258,073,839,973.29
  5. Step 5: Solve for x
    x = 258,073,839,973.29/521,500.64
  6. Step 6: Final answer
    x = 494,867.73

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1.5x scale

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.