Home / 808,106.94-1,115,319.15-486,142.47

Finding the Fourth Proportional to 808,106.94, 1,115,319.15 and 486,142.47

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Solution

The fourth proportional to 808,106.94, 1,115,319.15 and 486,142.47 is: 670,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,106.94 : 1,115,319.15 = 486,142.47 : x
  2. Step 2: Convert to fraction form
    808,106.94/1,115,319.15 = 486,142.47/x
  3. Step 3: Cross multiply
    808,106.94x = 1,115,319.15 × 486,142.47
  4. Step 4: Simplify right side
    808,106.94x = 542,204,006,419.30
  5. Step 5: Solve for x
    x = 542,204,006,419.30/808,106.94
  6. Step 6: Final answer
    x = 670,955.76

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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.