Home / 858,876.40-1,288,314.60-409,812.40

Finding the Fourth Proportional to 858,876.40, 1,288,314.60 and 409,812.40

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Solution

The fourth proportional to 858,876.40, 1,288,314.60 and 409,812.40 is: 614,718.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,876.40 : 1,288,314.60 = 409,812.40 : x
  2. Step 2: Convert to fraction form
    858,876.40/1,288,314.60 = 409,812.40/x
  3. Step 3: Cross multiply
    858,876.40x = 1,288,314.60 × 409,812.40
  4. Step 4: Simplify right side
    858,876.40x = 527,967,298,181.04
  5. Step 5: Solve for x
    x = 527,967,298,181.04/858,876.40
  6. Step 6: Final answer
    x = 614,718.60

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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.