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Finding the Fourth Proportional to 579,627.60, 869,441.40 and 523,640.40

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Solution

The fourth proportional to 579,627.60, 869,441.40 and 523,640.40 is: 785,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,627.60 : 869,441.40 = 523,640.40 : x
  2. Step 2: Convert to fraction form
    579,627.60/869,441.40 = 523,640.40/x
  3. Step 3: Cross multiply
    579,627.60x = 869,441.40 × 523,640.40
  4. Step 4: Simplify right side
    579,627.60x = 455,274,642,472.56
  5. Step 5: Solve for x
    x = 455,274,642,472.56/579,627.60
  6. Step 6: Final answer
    x = 785,460.60

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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.