Home / 858,809.70-1,288,214.55-480,896.10

Finding the Fourth Proportional to 858,809.70, 1,288,214.55 and 480,896.10

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Solution

The fourth proportional to 858,809.70, 1,288,214.55 and 480,896.10 is: 721,344.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,809.70 : 1,288,214.55 = 480,896.10 : x
  2. Step 2: Convert to fraction form
    858,809.70/1,288,214.55 = 480,896.10/x
  3. Step 3: Cross multiply
    858,809.70x = 1,288,214.55 × 480,896.10
  4. Step 4: Simplify right side
    858,809.70x = 619,497,353,058.26
  5. Step 5: Solve for x
    x = 619,497,353,058.26/858,809.70
  6. Step 6: Final answer
    x = 721,344.15

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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.