Home / 763,627.60-1,145,441.40-538,512.40

Finding the Fourth Proportional to 763,627.60, 1,145,441.40 and 538,512.40

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Solution

The fourth proportional to 763,627.60, 1,145,441.40 and 538,512.40 is: 807,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,627.60 : 1,145,441.40 = 538,512.40 : x
  2. Step 2: Convert to fraction form
    763,627.60/1,145,441.40 = 538,512.40/x
  3. Step 3: Cross multiply
    763,627.60x = 1,145,441.40 × 538,512.40
  4. Step 4: Simplify right side
    763,627.60x = 616,834,397,373.36
  5. Step 5: Solve for x
    x = 616,834,397,373.36/763,627.60
  6. Step 6: Final answer
    x = 807,768.60

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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.