Home / 877,375.80-1,210,756.32-490,194.20

Finding the Fourth Proportional to 877,375.80, 1,210,756.32 and 490,194.20

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Solution

The fourth proportional to 877,375.80, 1,210,756.32 and 490,194.20 is: 676,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,375.80 : 1,210,756.32 = 490,194.20 : x
  2. Step 2: Convert to fraction form
    877,375.80/1,210,756.32 = 490,194.20/x
  3. Step 3: Cross multiply
    877,375.80x = 1,210,756.32 × 490,194.20
  4. Step 4: Simplify right side
    877,375.80x = 593,505,725,677.34
  5. Step 5: Solve for x
    x = 593,505,725,677.34/877,375.80
  6. Step 6: Final answer
    x = 676,455.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.