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Finding the Fourth Proportional to 539,088.40, 808,632.60 and 371,126.80

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Solution

The fourth proportional to 539,088.40, 808,632.60 and 371,126.80 is: 556,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,088.40 : 808,632.60 = 371,126.80 : x
  2. Step 2: Convert to fraction form
    539,088.40/808,632.60 = 371,126.80/x
  3. Step 3: Cross multiply
    539,088.40x = 808,632.60 × 371,126.80
  4. Step 4: Simplify right side
    539,088.40x = 300,105,229,213.68
  5. Step 5: Solve for x
    x = 300,105,229,213.68/539,088.40
  6. Step 6: Final answer
    x = 556,690.20

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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.