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Finding the Fourth Proportional to 572,117.28, 789,522 and 317,509.44

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Solution

The fourth proportional to 572,117.28, 789,522 and 317,509.44 is: 438,163.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,117.28 : 789,522 = 317,509.44 : x
  2. Step 2: Convert to fraction form
    572,117.28/789,522 = 317,509.44/x
  3. Step 3: Cross multiply
    572,117.28x = 789,522 × 317,509.44
  4. Step 4: Simplify right side
    572,117.28x = 250,680,688,087.68
  5. Step 5: Solve for x
    x = 250,680,688,087.68/572,117.28
  6. Step 6: Final answer
    x = 438,163.11

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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.