Home / 840,947.42-1,261,421.12-480,865.68

Finding the Fourth Proportional to 840,947.42, 1,261,421.12 and 480,865.68

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Solution

The fourth proportional to 840,947.42, 1,261,421.12 and 480,865.68 is: 721,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,947.42 : 1,261,421.12 = 480,865.68 : x
  2. Step 2: Convert to fraction form
    840,947.42/1,261,421.12 = 480,865.68/x
  3. Step 3: Cross multiply
    840,947.42x = 1,261,421.12 × 480,865.68
  4. Step 4: Simplify right side
    840,947.42x = 606,574,125,837.33
  5. Step 5: Solve for x
    x = 606,574,125,837.33/840,947.42
  6. Step 6: Final answer
    x = 721,298.51

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Double scale
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Similar ratio
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1.5x scale

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.