Home / 689,530.80-1,034,296.20-453,140.40

Finding the Fourth Proportional to 689,530.80, 1,034,296.20 and 453,140.40

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Solution

The fourth proportional to 689,530.80, 1,034,296.20 and 453,140.40 is: 679,710.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,530.80 : 1,034,296.20 = 453,140.40 : x
  2. Step 2: Convert to fraction form
    689,530.80/1,034,296.20 = 453,140.40/x
  3. Step 3: Cross multiply
    689,530.80x = 1,034,296.20 × 453,140.40
  4. Step 4: Simplify right side
    689,530.80x = 468,681,393,786.48
  5. Step 5: Solve for x
    x = 468,681,393,786.48/689,530.80
  6. Step 6: Final answer
    x = 679,710.60

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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.