Home / 571,319.09-857,408.83-390,972.77

Finding the Fourth Proportional to 571,319.09, 857,408.83 and 390,972.77

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Solution

The fourth proportional to 571,319.09, 857,408.83 and 390,972.77 is: 586,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,319.09 : 857,408.83 = 390,972.77 : x
  2. Step 2: Convert to fraction form
    571,319.09/857,408.83 = 390,972.77/x
  3. Step 3: Cross multiply
    571,319.09x = 857,408.83 × 390,972.77
  4. Step 4: Simplify right side
    571,319.09x = 335,223,500,023.08
  5. Step 5: Solve for x
    x = 335,223,500,023.08/571,319.09
  6. Step 6: Final answer
    x = 586,753.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.