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Finding the Fourth Proportional to 609,897.60, 915,364.80 and 491,702.40

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Solution

The fourth proportional to 609,897.60, 915,364.80 and 491,702.40 is: 737,971.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,897.60 : 915,364.80 = 491,702.40 : x
  2. Step 2: Convert to fraction form
    609,897.60/915,364.80 = 491,702.40/x
  3. Step 3: Cross multiply
    609,897.60x = 915,364.80 × 491,702.40
  4. Step 4: Simplify right side
    609,897.60x = 450,087,069,035.52
  5. Step 5: Solve for x
    x = 450,087,069,035.52/609,897.60
  6. Step 6: Final answer
    x = 737,971.54

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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.