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Finding the Fourth Proportional to 581,426.40, 872,139.60 and 382,360.80

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Solution

The fourth proportional to 581,426.40, 872,139.60 and 382,360.80 is: 573,541.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,426.40 : 872,139.60 = 382,360.80 : x
  2. Step 2: Convert to fraction form
    581,426.40/872,139.60 = 382,360.80/x
  3. Step 3: Cross multiply
    581,426.40x = 872,139.60 × 382,360.80
  4. Step 4: Simplify right side
    581,426.40x = 333,471,995,167.68
  5. Step 5: Solve for x
    x = 333,471,995,167.68/581,426.40
  6. Step 6: Final answer
    x = 573,541.20

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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.