Home / 662,204.81-913,872.65-390,284.17

Finding the Fourth Proportional to 662,204.81, 913,872.65 and 390,284.17

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Solution

The fourth proportional to 662,204.81, 913,872.65 and 390,284.17 is: 538,609.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,204.81 : 913,872.65 = 390,284.17 : x
  2. Step 2: Convert to fraction form
    662,204.81/913,872.65 = 390,284.17/x
  3. Step 3: Cross multiply
    662,204.81x = 913,872.65 × 390,284.17
  4. Step 4: Simplify right side
    662,204.81x = 356,670,024,454.85
  5. Step 5: Solve for x
    x = 356,670,024,454.85/662,204.81
  6. Step 6: Final answer
    x = 538,609.83

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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.