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Finding the Fourth Proportional to 565,681.12, 780,528.29 and 317,331.34

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Solution

The fourth proportional to 565,681.12, 780,528.29 and 317,331.34 is: 437,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,681.12 : 780,528.29 = 317,331.34 : x
  2. Step 2: Convert to fraction form
    565,681.12/780,528.29 = 317,331.34/x
  3. Step 3: Cross multiply
    565,681.12x = 780,528.29 × 317,331.34
  4. Step 4: Simplify right side
    565,681.12x = 247,686,084,635.63
  5. Step 5: Solve for x
    x = 247,686,084,635.63/565,681.12
  6. Step 6: Final answer
    x = 437,854.61

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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.