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Finding the Fourth Proportional to 518,818.25, 715,980.12 and 292,463.75

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Solution

The fourth proportional to 518,818.25, 715,980.12 and 292,463.75 is: 403,606.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,818.25 : 715,980.12 = 292,463.75 : x
  2. Step 2: Convert to fraction form
    518,818.25/715,980.12 = 292,463.75/x
  3. Step 3: Cross multiply
    518,818.25x = 715,980.12 × 292,463.75
  4. Step 4: Simplify right side
    518,818.25x = 209,398,230,820.65
  5. Step 5: Solve for x
    x = 209,398,230,820.65/518,818.25
  6. Step 6: Final answer
    x = 403,606.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.