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Finding the Fourth Proportional to 560,356.15, 773,287.77 and 318,638.74

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Solution

The fourth proportional to 560,356.15, 773,287.77 and 318,638.74 is: 439,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,356.15 : 773,287.77 = 318,638.74 : x
  2. Step 2: Convert to fraction form
    560,356.15/773,287.77 = 318,638.74/x
  3. Step 3: Cross multiply
    560,356.15x = 773,287.77 × 318,638.74
  4. Step 4: Simplify right side
    560,356.15x = 246,399,440,690.21
  5. Step 5: Solve for x
    x = 246,399,440,690.21/560,356.15
  6. Step 6: Final answer
    x = 439,719.35

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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.