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Finding the Fourth Proportional to 718,968.90, 992,264.96 and 413,044.72

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Solution

The fourth proportional to 718,968.90, 992,264.96 and 413,044.72 is: 570,052.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,968.90 : 992,264.96 = 413,044.72 : x
  2. Step 2: Convert to fraction form
    718,968.90/992,264.96 = 413,044.72/x
  3. Step 3: Cross multiply
    718,968.90x = 992,264.96 × 413,044.72
  4. Step 4: Simplify right side
    718,968.90x = 409,849,802,569.01
  5. Step 5: Solve for x
    x = 409,849,802,569.01/718,968.90
  6. Step 6: Final answer
    x = 570,052.20

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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.