Home / 763,443.20-1,145,164.80-447,737.60

Finding the Fourth Proportional to 763,443.20, 1,145,164.80 and 447,737.60

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Solution

The fourth proportional to 763,443.20, 1,145,164.80 and 447,737.60 is: 671,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,443.20 : 1,145,164.80 = 447,737.60 : x
  2. Step 2: Convert to fraction form
    763,443.20/1,145,164.80 = 447,737.60/x
  3. Step 3: Cross multiply
    763,443.20x = 1,145,164.80 × 447,737.60
  4. Step 4: Simplify right side
    763,443.20x = 512,733,339,156.48
  5. Step 5: Solve for x
    x = 512,733,339,156.48/763,443.20
  6. Step 6: Final answer
    x = 671,606.40

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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.