Home / 859,760.40-1,289,312.55-260,522.40

Finding the Fourth Proportional to 859,760.40, 1,289,312.55 and 260,522.40

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Solution

The fourth proportional to 859,760.40, 1,289,312.55 and 260,522.40 is: 390,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,760.40 : 1,289,312.55 = 260,522.40 : x
  2. Step 2: Convert to fraction form
    859,760.40/1,289,312.55 = 260,522.40/x
  3. Step 3: Cross multiply
    859,760.40x = 1,289,312.55 × 260,522.40
  4. Step 4: Simplify right side
    859,760.40x = 335,894,799,876.12
  5. Step 5: Solve for x
    x = 335,894,799,876.12/859,760.40
  6. Step 6: Final answer
    x = 390,684.20

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Double scale
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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.