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Finding the Fourth Proportional to 571,064.92, 787,774.78 and 387,241.33

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Solution

The fourth proportional to 571,064.92, 787,774.78 and 387,241.33 is: 534,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,064.92 : 787,774.78 = 387,241.33 : x
  2. Step 2: Convert to fraction form
    571,064.92/787,774.78 = 387,241.33/x
  3. Step 3: Cross multiply
    571,064.92x = 787,774.78 × 387,241.33
  4. Step 4: Simplify right side
    571,064.92x = 305,058,953,547.66
  5. Step 5: Solve for x
    x = 305,058,953,547.66/571,064.92
  6. Step 6: Final answer
    x = 534,193.12

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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.