Home / 651,272.80-976,909.20-491,605.60

Finding the Fourth Proportional to 651,272.80, 976,909.20 and 491,605.60

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Solution

The fourth proportional to 651,272.80, 976,909.20 and 491,605.60 is: 737,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,272.80 : 976,909.20 = 491,605.60 : x
  2. Step 2: Convert to fraction form
    651,272.80/976,909.20 = 491,605.60/x
  3. Step 3: Cross multiply
    651,272.80x = 976,909.20 × 491,605.60
  4. Step 4: Simplify right side
    651,272.80x = 480,254,033,411.52
  5. Step 5: Solve for x
    x = 480,254,033,411.52/651,272.80
  6. Step 6: Final answer
    x = 737,408.40

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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.