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Finding the Fourth Proportional to 518,735.55, 715,860.51 and 292,381.05

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Solution

The fourth proportional to 518,735.55, 715,860.51 and 292,381.05 is: 403,488.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,735.55 : 715,860.51 = 292,381.05 : x
  2. Step 2: Convert to fraction form
    518,735.55/715,860.51 = 292,381.05/x
  3. Step 3: Cross multiply
    518,735.55x = 715,860.51 × 292,381.05
  4. Step 4: Simplify right side
    518,735.55x = 209,304,047,567.34
  5. Step 5: Solve for x
    x = 209,304,047,567.34/518,735.55
  6. Step 6: Final answer
    x = 403,488.92

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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.