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Finding the Fourth Proportional to 522,870.40, 721,501.92 and 293,397.68

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Solution

The fourth proportional to 522,870.40, 721,501.92 and 293,397.68 is: 404,855.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,870.40 : 721,501.92 = 293,397.68 : x
  2. Step 2: Convert to fraction form
    522,870.40/721,501.92 = 293,397.68/x
  3. Step 3: Cross multiply
    522,870.40x = 721,501.92 × 293,397.68
  4. Step 4: Simplify right side
    522,870.40x = 211,686,989,443.55
  5. Step 5: Solve for x
    x = 211,686,989,443.55/522,870.40
  6. Step 6: Final answer
    x = 404,855.56

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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.