Home / 877,561.20-1,316,341.78-212,713.20

Finding the Fourth Proportional to 877,561.20, 1,316,341.78 and 212,713.20

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Solution

The fourth proportional to 877,561.20, 1,316,341.78 and 212,713.20 is: 319,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,561.20 : 1,316,341.78 = 212,713.20 : x
  2. Step 2: Convert to fraction form
    877,561.20/1,316,341.78 = 212,713.20/x
  3. Step 3: Cross multiply
    877,561.20x = 1,316,341.78 × 212,713.20
  4. Step 4: Simplify right side
    877,561.20x = 280,003,272,317.50
  5. Step 5: Solve for x
    x = 280,003,272,317.50/877,561.20
  6. Step 6: Final answer
    x = 319,069.80

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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.