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Finding the Fourth Proportional to 572,066.28, 789,451.44 and 317,419.32

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Solution

The fourth proportional to 572,066.28, 789,451.44 and 317,419.32 is: 438,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,066.28 : 789,451.44 = 317,419.32 : x
  2. Step 2: Convert to fraction form
    572,066.28/789,451.44 = 317,419.32/x
  3. Step 3: Cross multiply
    572,066.28x = 789,451.44 × 317,419.32
  4. Step 4: Simplify right side
    572,066.28x = 250,587,139,257.82
  5. Step 5: Solve for x
    x = 250,587,139,257.82/572,066.28
  6. Step 6: Final answer
    x = 438,038.65

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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.