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Finding the Fourth Proportional to 560,057.80, 772,881.06 and 318,341.92

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Solution

The fourth proportional to 560,057.80, 772,881.06 and 318,341.92 is: 439,312.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,057.80 : 772,881.06 = 318,341.92 : x
  2. Step 2: Convert to fraction form
    560,057.80/772,881.06 = 318,341.92/x
  3. Step 3: Cross multiply
    560,057.80x = 772,881.06 × 318,341.92
  4. Step 4: Simplify right side
    560,057.80x = 246,040,440,572.04
  5. Step 5: Solve for x
    x = 246,040,440,572.04/560,057.80
  6. Step 6: Final answer
    x = 439,312.59

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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.