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Finding the Fourth Proportional to 914,763.78, 1,262,372.78 and 506,892.03

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Solution

The fourth proportional to 914,763.78, 1,262,372.78 and 506,892.03 is: 699,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,763.78 : 1,262,372.78 = 506,892.03 : x
  2. Step 2: Convert to fraction form
    914,763.78/1,262,372.78 = 506,892.03/x
  3. Step 3: Cross multiply
    914,763.78x = 1,262,372.78 × 506,892.03
  4. Step 4: Simplify right side
    914,763.78x = 639,886,706,117.12
  5. Step 5: Solve for x
    x = 639,886,706,117.12/914,763.78
  6. Step 6: Final answer
    x = 699,510.32

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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.