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Finding the Fourth Proportional to 508,976.60, 763,464.90 and 497,312.60

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Solution

The fourth proportional to 508,976.60, 763,464.90 and 497,312.60 is: 745,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,976.60 : 763,464.90 = 497,312.60 : x
  2. Step 2: Convert to fraction form
    508,976.60/763,464.90 = 497,312.60/x
  3. Step 3: Cross multiply
    508,976.60x = 763,464.90 × 497,312.60
  4. Step 4: Simplify right side
    508,976.60x = 379,680,714,427.74
  5. Step 5: Solve for x
    x = 379,680,714,427.74/508,976.60
  6. Step 6: Final answer
    x = 745,968.90

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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.