Home / 625,972.32-862,835.76-489,771.36

Finding the Fourth Proportional to 625,972.32, 862,835.76 and 489,771.36

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Solution

The fourth proportional to 625,972.32, 862,835.76 and 489,771.36 is: 675,097.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,972.32 : 862,835.76 = 489,771.36 : x
  2. Step 2: Convert to fraction form
    625,972.32/862,835.76 = 489,771.36/x
  3. Step 3: Cross multiply
    625,972.32x = 862,835.76 × 489,771.36
  4. Step 4: Simplify right side
    625,972.32x = 422,592,243,631.83
  5. Step 5: Solve for x
    x = 422,592,243,631.83/625,972.32
  6. Step 6: Final answer
    x = 675,097.33

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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.