Home / 621,261.95-930,526.98-513,423.71

Finding the Fourth Proportional to 621,261.95, 930,526.98 and 513,423.71

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Solution

The fourth proportional to 621,261.95, 930,526.98 and 513,423.71 is: 769,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,261.95 : 930,526.98 = 513,423.71 : x
  2. Step 2: Convert to fraction form
    621,261.95/930,526.98 = 513,423.71/x
  3. Step 3: Cross multiply
    621,261.95x = 930,526.98 × 513,423.71
  4. Step 4: Simplify right side
    621,261.95x = 477,754,614,326.70
  5. Step 5: Solve for x
    x = 477,754,614,326.70/621,261.95
  6. Step 6: Final answer
    x = 769,006.72

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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.