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Finding the Fourth Proportional to 926,226, 1,278,191.88 and 502,290

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Solution

The fourth proportional to 926,226, 1,278,191.88 and 502,290 is: 693,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,226 : 1,278,191.88 = 502,290 : x
  2. Step 2: Convert to fraction form
    926,226/1,278,191.88 = 502,290/x
  3. Step 3: Cross multiply
    926,226x = 1,278,191.88 × 502,290
  4. Step 4: Simplify right side
    926,226x = 642,022,999,405.20
  5. Step 5: Solve for x
    x = 642,022,999,405.20/926,226
  6. Step 6: Final answer
    x = 693,160.20

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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.