Home / 742,411.17-1,024,526.88-420,115.41

Finding the Fourth Proportional to 742,411.17, 1,024,526.88 and 420,115.41

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Solution

The fourth proportional to 742,411.17, 1,024,526.88 and 420,115.41 is: 579,758.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,411.17 : 1,024,526.88 = 420,115.41 : x
  2. Step 2: Convert to fraction form
    742,411.17/1,024,526.88 = 420,115.41/x
  3. Step 3: Cross multiply
    742,411.17x = 1,024,526.88 × 420,115.41
  4. Step 4: Simplify right side
    742,411.17x = 430,419,530,247.22
  5. Step 5: Solve for x
    x = 430,419,530,247.22/742,411.17
  6. Step 6: Final answer
    x = 579,758.96

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Double scale
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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.