Home / 742,511.88-1,024,691.04-420,218.28

Finding the Fourth Proportional to 742,511.88, 1,024,691.04 and 420,218.28

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Solution

The fourth proportional to 742,511.88, 1,024,691.04 and 420,218.28 is: 579,915.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,511.88 : 1,024,691.04 = 420,218.28 : x
  2. Step 2: Convert to fraction form
    742,511.88/1,024,691.04 = 420,218.28/x
  3. Step 3: Cross multiply
    742,511.88x = 1,024,691.04 × 420,218.28
  4. Step 4: Simplify right side
    742,511.88x = 430,593,906,360.21
  5. Step 5: Solve for x
    x = 430,593,906,360.21/742,511.88
  6. Step 6: Final answer
    x = 579,915.17

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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.