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Finding the Fourth Proportional to 707,713.18, 976,510 and 449,632.14

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Solution

The fourth proportional to 707,713.18, 976,510 and 449,632.14 is: 620,407.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,713.18 : 976,510 = 449,632.14 : x
  2. Step 2: Convert to fraction form
    707,713.18/976,510 = 449,632.14/x
  3. Step 3: Cross multiply
    707,713.18x = 976,510 × 449,632.14
  4. Step 4: Simplify right side
    707,713.18x = 439,070,281,031.40
  5. Step 5: Solve for x
    x = 439,070,281,031.40/707,713.18
  6. Step 6: Final answer
    x = 620,407.10

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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.