Home / 877,543.90-1,316,315.86-212,695.90

Finding the Fourth Proportional to 877,543.90, 1,316,315.86 and 212,695.90

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Solution

The fourth proportional to 877,543.90, 1,316,315.86 and 212,695.90 is: 319,043.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,543.90 : 1,316,315.86 = 212,695.90 : x
  2. Step 2: Convert to fraction form
    877,543.90/1,316,315.86 = 212,695.90/x
  3. Step 3: Cross multiply
    877,543.90x = 1,316,315.86 × 212,695.90
  4. Step 4: Simplify right side
    877,543.90x = 279,974,986,526.97
  5. Step 5: Solve for x
    x = 279,974,986,526.97/877,543.90
  6. Step 6: Final answer
    x = 319,043.85

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Double scale
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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.