Home / 742,752.59-1,025,006.81-420,455.61

Finding the Fourth Proportional to 742,752.59, 1,025,006.81 and 420,455.61

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Solution

The fourth proportional to 742,752.59, 1,025,006.81 and 420,455.61 is: 580,233.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,752.59 : 1,025,006.81 = 420,455.61 : x
  2. Step 2: Convert to fraction form
    742,752.59/1,025,006.81 = 420,455.61/x
  3. Step 3: Cross multiply
    742,752.59x = 1,025,006.81 × 420,455.61
  4. Step 4: Simplify right side
    742,752.59x = 430,969,861,450.43
  5. Step 5: Solve for x
    x = 430,969,861,450.43/742,752.59
  6. Step 6: Final answer
    x = 580,233.40

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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.