Home / 651,034.20-976,551.30-429,418.20

Finding the Fourth Proportional to 651,034.20, 976,551.30 and 429,418.20

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Solution

The fourth proportional to 651,034.20, 976,551.30 and 429,418.20 is: 644,127.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,034.20 : 976,551.30 = 429,418.20 : x
  2. Step 2: Convert to fraction form
    651,034.20/976,551.30 = 429,418.20/x
  3. Step 3: Cross multiply
    651,034.20x = 976,551.30 × 429,418.20
  4. Step 4: Simplify right side
    651,034.20x = 419,348,901,453.66
  5. Step 5: Solve for x
    x = 419,348,901,453.66/651,034.20
  6. Step 6: Final answer
    x = 644,127.30

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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.