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Finding the Fourth Proportional to 584,430.30, 876,645.45 and 489,951.90

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Solution

The fourth proportional to 584,430.30, 876,645.45 and 489,951.90 is: 734,927.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,430.30 : 876,645.45 = 489,951.90 : x
  2. Step 2: Convert to fraction form
    584,430.30/876,645.45 = 489,951.90/x
  3. Step 3: Cross multiply
    584,430.30x = 876,645.45 × 489,951.90
  4. Step 4: Simplify right side
    584,430.30x = 429,514,103,853.86
  5. Step 5: Solve for x
    x = 429,514,103,853.86/584,430.30
  6. Step 6: Final answer
    x = 734,927.85

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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.