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Finding the Fourth Proportional to 579,340.20, 869,010.30 and 555,720.60

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Solution

The fourth proportional to 579,340.20, 869,010.30 and 555,720.60 is: 833,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,340.20 : 869,010.30 = 555,720.60 : x
  2. Step 2: Convert to fraction form
    579,340.20/869,010.30 = 555,720.60/x
  3. Step 3: Cross multiply
    579,340.20x = 869,010.30 × 555,720.60
  4. Step 4: Simplify right side
    579,340.20x = 482,926,925,322.18
  5. Step 5: Solve for x
    x = 482,926,925,322.18/579,340.20
  6. Step 6: Final answer
    x = 833,580.90

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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.