Home / 780,143.70-1,170,215.55-514,423.20

Finding the Fourth Proportional to 780,143.70, 1,170,215.55 and 514,423.20

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Solution

The fourth proportional to 780,143.70, 1,170,215.55 and 514,423.20 is: 771,634.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,143.70 : 1,170,215.55 = 514,423.20 : x
  2. Step 2: Convert to fraction form
    780,143.70/1,170,215.55 = 514,423.20/x
  3. Step 3: Cross multiply
    780,143.70x = 1,170,215.55 × 514,423.20
  4. Step 4: Simplify right side
    780,143.70x = 601,986,027,920.76
  5. Step 5: Solve for x
    x = 601,986,027,920.76/780,143.70
  6. Step 6: Final answer
    x = 771,634.80

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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.