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Finding the Fourth Proportional to 710,082.37, 979,920.35 and 404,143.75

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Solution

The fourth proportional to 710,082.37, 979,920.35 and 404,143.75 is: 557,722.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,082.37 : 979,920.35 = 404,143.75 : x
  2. Step 2: Convert to fraction form
    710,082.37/979,920.35 = 404,143.75/x
  3. Step 3: Cross multiply
    710,082.37x = 979,920.35 × 404,143.75
  4. Step 4: Simplify right side
    710,082.37x = 396,028,684,950.31
  5. Step 5: Solve for x
    x = 396,028,684,950.31/710,082.37
  6. Step 6: Final answer
    x = 557,722.18

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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.