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Finding the Fourth Proportional to 710,342.64, 1,065,398.94 and 260,953.02

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Solution

The fourth proportional to 710,342.64, 1,065,398.94 and 260,953.02 is: 391,387.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,342.64 : 1,065,398.94 = 260,953.02 : x
  2. Step 2: Convert to fraction form
    710,342.64/1,065,398.94 = 260,953.02/x
  3. Step 3: Cross multiply
    710,342.64x = 1,065,398.94 × 260,953.02
  4. Step 4: Simplify right side
    710,342.64x = 278,019,070,897.80
  5. Step 5: Solve for x
    x = 278,019,070,897.80/710,342.64
  6. Step 6: Final answer
    x = 391,387.28

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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.