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Finding the Fourth Proportional to 836,894.72, 1,155,082.72 and 497,297.28

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Solution

The fourth proportional to 836,894.72, 1,155,082.72 and 497,297.28 is: 686,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    836,894.72 : 1,155,082.72 = 497,297.28 : x
  2. Step 2: Convert to fraction form
    836,894.72/1,155,082.72 = 497,297.28/x
  3. Step 3: Cross multiply
    836,894.72x = 1,155,082.72 × 497,297.28
  4. Step 4: Simplify right side
    836,894.72x = 574,419,494,831.00
  5. Step 5: Solve for x
    x = 574,419,494,831.00/836,894.72
  6. Step 6: Final answer
    x = 686,370.08

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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.