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Finding the Fourth Proportional to 718,210.80, 991,535.58 and 476,823.11

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Solution

The fourth proportional to 718,210.80, 991,535.58 and 476,823.11 is: 658,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,210.80 : 991,535.58 = 476,823.11 : x
  2. Step 2: Convert to fraction form
    718,210.80/991,535.58 = 476,823.11/x
  3. Step 3: Cross multiply
    718,210.80x = 991,535.58 × 476,823.11
  4. Step 4: Simplify right side
    718,210.80x = 472,787,073,973.58
  5. Step 5: Solve for x
    x = 472,787,073,973.58/718,210.80
  6. Step 6: Final answer
    x = 658,284.55

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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.