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Finding the Fourth Proportional to 812,295.38, 1,121,262 and 472,763.72

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Solution

The fourth proportional to 812,295.38, 1,121,262 and 472,763.72 is: 652,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,295.38 : 1,121,262 = 472,763.72 : x
  2. Step 2: Convert to fraction form
    812,295.38/1,121,262 = 472,763.72/x
  3. Step 3: Cross multiply
    812,295.38x = 1,121,262 × 472,763.72
  4. Step 4: Simplify right side
    812,295.38x = 530,091,994,214.64
  5. Step 5: Solve for x
    x = 530,091,994,214.64/812,295.38
  6. Step 6: Final answer
    x = 652,585.26

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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.