Home / 763,445.70-1,145,168.55-447,740.10

Finding the Fourth Proportional to 763,445.70, 1,145,168.55 and 447,740.10

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Solution

The fourth proportional to 763,445.70, 1,145,168.55 and 447,740.10 is: 671,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,445.70 : 1,145,168.55 = 447,740.10 : x
  2. Step 2: Convert to fraction form
    763,445.70/1,145,168.55 = 447,740.10/x
  3. Step 3: Cross multiply
    763,445.70x = 1,145,168.55 × 447,740.10
  4. Step 4: Simplify right side
    763,445.70x = 512,737,881,093.86
  5. Step 5: Solve for x
    x = 512,737,881,093.86/763,445.70
  6. Step 6: Final answer
    x = 671,610.15

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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.