Home / 509,990.10-764,985.15-454,877.70

Finding the Fourth Proportional to 509,990.10, 764,985.15 and 454,877.70

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Solution

The fourth proportional to 509,990.10, 764,985.15 and 454,877.70 is: 682,316.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,990.10 : 764,985.15 = 454,877.70 : x
  2. Step 2: Convert to fraction form
    509,990.10/764,985.15 = 454,877.70/x
  3. Step 3: Cross multiply
    509,990.10x = 764,985.15 × 454,877.70
  4. Step 4: Simplify right side
    509,990.10x = 347,974,685,566.16
  5. Step 5: Solve for x
    x = 347,974,685,566.16/509,990.10
  6. Step 6: Final answer
    x = 682,316.55

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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.