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Finding the Fourth Proportional to 560,112.38, 772,924.35 and 318,361.40

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Solution

The fourth proportional to 560,112.38, 772,924.35 and 318,361.40 is: 439,321.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,112.38 : 772,924.35 = 318,361.40 : x
  2. Step 2: Convert to fraction form
    560,112.38/772,924.35 = 318,361.40/x
  3. Step 3: Cross multiply
    560,112.38x = 772,924.35 × 318,361.40
  4. Step 4: Simplify right side
    560,112.38x = 246,069,278,160.09
  5. Step 5: Solve for x
    x = 246,069,278,160.09/560,112.38
  6. Step 6: Final answer
    x = 439,321.26

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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.