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Finding the Fourth Proportional to 518,816, 715,977.02 and 292,461.50

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Solution

The fourth proportional to 518,816, 715,977.02 and 292,461.50 is: 403,603.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,816 : 715,977.02 = 292,461.50 : x
  2. Step 2: Convert to fraction form
    518,816/715,977.02 = 292,461.50/x
  3. Step 3: Cross multiply
    518,816x = 715,977.02 × 292,461.50
  4. Step 4: Simplify right side
    518,816x = 209,395,711,772.42
  5. Step 5: Solve for x
    x = 209,395,711,772.42/518,816
  6. Step 6: Final answer
    x = 403,603.03

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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.