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Finding the Fourth Proportional to 560,016.72, 772,970.40 and 318,440.88

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Solution

The fourth proportional to 560,016.72, 772,970.40 and 318,440.88 is: 439,532.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,016.72 : 772,970.40 = 318,440.88 : x
  2. Step 2: Convert to fraction form
    560,016.72/772,970.40 = 318,440.88/x
  3. Step 3: Cross multiply
    560,016.72x = 772,970.40 × 318,440.88
  4. Step 4: Simplify right side
    560,016.72x = 246,145,374,389.95
  5. Step 5: Solve for x
    x = 246,145,374,389.95/560,016.72
  6. Step 6: Final answer
    x = 439,532.19

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1.5x scale

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.