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Finding the Fourth Proportional to 559,793.64, 772,486 and 318,042.64

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Solution

The fourth proportional to 559,793.64, 772,486 and 318,042.64 is: 438,882.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,793.64 : 772,486 = 318,042.64 : x
  2. Step 2: Convert to fraction form
    559,793.64/772,486 = 318,042.64/x
  3. Step 3: Cross multiply
    559,793.64x = 772,486 × 318,042.64
  4. Step 4: Simplify right side
    559,793.64x = 245,683,486,803.04
  5. Step 5: Solve for x
    x = 245,683,486,803.04/559,793.64
  6. Step 6: Final answer
    x = 438,882.24

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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.