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Finding the Fourth Proportional to 587,643.30, 881,464.95 and 288,315.90

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Solution

The fourth proportional to 587,643.30, 881,464.95 and 288,315.90 is: 432,473.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,643.30 : 881,464.95 = 288,315.90 : x
  2. Step 2: Convert to fraction form
    587,643.30/881,464.95 = 288,315.90/x
  3. Step 3: Cross multiply
    587,643.30x = 881,464.95 × 288,315.90
  4. Step 4: Simplify right side
    587,643.30x = 254,140,360,377.71
  5. Step 5: Solve for x
    x = 254,140,360,377.71/587,643.30
  6. Step 6: Final answer
    x = 432,473.85

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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.