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Finding the Fourth Proportional to 551,981.80, 761,703.78 and 325,700.20

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Solution

The fourth proportional to 551,981.80, 761,703.78 and 325,700.20 is: 449,447.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,981.80 : 761,703.78 = 325,700.20 : x
  2. Step 2: Convert to fraction form
    551,981.80/761,703.78 = 325,700.20/x
  3. Step 3: Cross multiply
    551,981.80x = 761,703.78 × 325,700.20
  4. Step 4: Simplify right side
    551,981.80x = 248,087,073,486.76
  5. Step 5: Solve for x
    x = 248,087,073,486.76/551,981.80
  6. Step 6: Final answer
    x = 449,447.92

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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.