Home / 656,823.10-985,234.65-432,436.90

Finding the Fourth Proportional to 656,823.10, 985,234.65 and 432,436.90

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Solution

The fourth proportional to 656,823.10, 985,234.65 and 432,436.90 is: 648,655.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,823.10 : 985,234.65 = 432,436.90 : x
  2. Step 2: Convert to fraction form
    656,823.10/985,234.65 = 432,436.90/x
  3. Step 3: Cross multiply
    656,823.10x = 985,234.65 × 432,436.90
  4. Step 4: Simplify right side
    656,823.10x = 426,051,817,818.59
  5. Step 5: Solve for x
    x = 426,051,817,818.59/656,823.10
  6. Step 6: Final answer
    x = 648,655.35

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Half scale
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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.