Home / 742,422.66-1,024,543.92-402,890.91

Finding the Fourth Proportional to 742,422.66, 1,024,543.92 and 402,890.91

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Solution

The fourth proportional to 742,422.66, 1,024,543.92 and 402,890.91 is: 555,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,422.66 : 1,024,543.92 = 402,890.91 : x
  2. Step 2: Convert to fraction form
    742,422.66/1,024,543.92 = 402,890.91/x
  3. Step 3: Cross multiply
    742,422.66x = 1,024,543.92 × 402,890.91
  4. Step 4: Simplify right side
    742,422.66x = 412,779,432,263.77
  5. Step 5: Solve for x
    x = 412,779,432,263.77/742,422.66
  6. Step 6: Final answer
    x = 555,989.81

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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.