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Finding the Fourth Proportional to 515,077.60, 772,616.40 and 506,329.60

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Solution

The fourth proportional to 515,077.60, 772,616.40 and 506,329.60 is: 759,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,077.60 : 772,616.40 = 506,329.60 : x
  2. Step 2: Convert to fraction form
    515,077.60/772,616.40 = 506,329.60/x
  3. Step 3: Cross multiply
    515,077.60x = 772,616.40 × 506,329.60
  4. Step 4: Simplify right side
    515,077.60x = 391,198,552,765.44
  5. Step 5: Solve for x
    x = 391,198,552,765.44/515,077.60
  6. Step 6: Final answer
    x = 759,494.40

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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.