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Finding the Fourth Proportional to 658,347.40, 987,521.10 and 606,507.40

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Solution

The fourth proportional to 658,347.40, 987,521.10 and 606,507.40 is: 909,761.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,347.40 : 987,521.10 = 606,507.40 : x
  2. Step 2: Convert to fraction form
    658,347.40/987,521.10 = 606,507.40/x
  3. Step 3: Cross multiply
    658,347.40x = 987,521.10 × 606,507.40
  4. Step 4: Simplify right side
    658,347.40x = 598,938,854,806.14
  5. Step 5: Solve for x
    x = 598,938,854,806.14/658,347.40
  6. Step 6: Final answer
    x = 909,761.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.