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Finding the Fourth Proportional to 658,337.60, 908,255.50 and 486,667.74

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Solution

The fourth proportional to 658,337.60, 908,255.50 and 486,667.74 is: 671,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,337.60 : 908,255.50 = 486,667.74 : x
  2. Step 2: Convert to fraction form
    658,337.60/908,255.50 = 486,667.74/x
  3. Step 3: Cross multiply
    658,337.60x = 908,255.50 × 486,667.74
  4. Step 4: Simplify right side
    658,337.60x = 442,018,650,310.90
  5. Step 5: Solve for x
    x = 442,018,650,310.90/658,337.60
  6. Step 6: Final answer
    x = 671,416.39

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.