Home / 670,143.20-1,005,214.80-355,215.20

Finding the Fourth Proportional to 670,143.20, 1,005,214.80 and 355,215.20

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Solution

The fourth proportional to 670,143.20, 1,005,214.80 and 355,215.20 is: 532,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,143.20 : 1,005,214.80 = 355,215.20 : x
  2. Step 2: Convert to fraction form
    670,143.20/1,005,214.80 = 355,215.20/x
  3. Step 3: Cross multiply
    670,143.20x = 1,005,214.80 × 355,215.20
  4. Step 4: Simplify right side
    670,143.20x = 357,067,576,224.96
  5. Step 5: Solve for x
    x = 357,067,576,224.96/670,143.20
  6. Step 6: Final answer
    x = 532,822.80

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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.