Home / 651,307.20-976,960.80-402,475.20

Finding the Fourth Proportional to 651,307.20, 976,960.80 and 402,475.20

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Solution

The fourth proportional to 651,307.20, 976,960.80 and 402,475.20 is: 603,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,307.20 : 976,960.80 = 402,475.20 : x
  2. Step 2: Convert to fraction form
    651,307.20/976,960.80 = 402,475.20/x
  3. Step 3: Cross multiply
    651,307.20x = 976,960.80 × 402,475.20
  4. Step 4: Simplify right side
    651,307.20x = 393,202,493,372.16
  5. Step 5: Solve for x
    x = 393,202,493,372.16/651,307.20
  6. Step 6: Final answer
    x = 603,712.80

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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.