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Finding the Fourth Proportional to 572,264.64, 789,725.16 and 317,615.76

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Solution

The fourth proportional to 572,264.64, 789,725.16 and 317,615.76 is: 438,309.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,264.64 : 789,725.16 = 317,615.76 : x
  2. Step 2: Convert to fraction form
    572,264.64/789,725.16 = 317,615.76/x
  3. Step 3: Cross multiply
    572,264.64x = 789,725.16 × 317,615.76
  4. Step 4: Simplify right side
    572,264.64x = 250,829,156,884.52
  5. Step 5: Solve for x
    x = 250,829,156,884.52/572,264.64
  6. Step 6: Final answer
    x = 438,309.72

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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.