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Finding the Fourth Proportional to 670,807.89, 1,006,211.84 and 459,806.13

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Solution

The fourth proportional to 670,807.89, 1,006,211.84 and 459,806.13 is: 689,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,807.89 : 1,006,211.84 = 459,806.13 : x
  2. Step 2: Convert to fraction form
    670,807.89/1,006,211.84 = 459,806.13/x
  3. Step 3: Cross multiply
    670,807.89x = 1,006,211.84 × 459,806.13
  4. Step 4: Simplify right side
    670,807.89x = 462,662,369,811.55
  5. Step 5: Solve for x
    x = 462,662,369,811.55/670,807.89
  6. Step 6: Final answer
    x = 689,709.20

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Double scale
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Similar ratio
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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.