Home / 651,103.20-976,654.80-402,271.20

Finding the Fourth Proportional to 651,103.20, 976,654.80 and 402,271.20

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Solution

The fourth proportional to 651,103.20, 976,654.80 and 402,271.20 is: 603,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,103.20 : 976,654.80 = 402,271.20 : x
  2. Step 2: Convert to fraction form
    651,103.20/976,654.80 = 402,271.20/x
  3. Step 3: Cross multiply
    651,103.20x = 976,654.80 × 402,271.20
  4. Step 4: Simplify right side
    651,103.20x = 392,880,098,381.76
  5. Step 5: Solve for x
    x = 392,880,098,381.76/651,103.20
  6. Step 6: Final answer
    x = 603,406.80

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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.