Home / 811,315.20-1,119,696.48-448,766.40

Finding the Fourth Proportional to 811,315.20, 1,119,696.48 and 448,766.40

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Solution

The fourth proportional to 811,315.20, 1,119,696.48 and 448,766.40 is: 619,342.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,315.20 : 1,119,696.48 = 448,766.40 : x
  2. Step 2: Convert to fraction form
    811,315.20/1,119,696.48 = 448,766.40/x
  3. Step 3: Cross multiply
    811,315.20x = 1,119,696.48 × 448,766.40
  4. Step 4: Simplify right side
    811,315.20x = 502,482,158,422.27
  5. Step 5: Solve for x
    x = 502,482,158,422.27/811,315.20
  6. Step 6: Final answer
    x = 619,342.71

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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.