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Finding the Fourth Proportional to 888,653.70, 1,226,336.55 and 480,753.90

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Solution

The fourth proportional to 888,653.70, 1,226,336.55 and 480,753.90 is: 663,437.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,653.70 : 1,226,336.55 = 480,753.90 : x
  2. Step 2: Convert to fraction form
    888,653.70/1,226,336.55 = 480,753.90/x
  3. Step 3: Cross multiply
    888,653.70x = 1,226,336.55 × 480,753.90
  4. Step 4: Simplify right side
    888,653.70x = 589,566,079,125.05
  5. Step 5: Solve for x
    x = 589,566,079,125.05/888,653.70
  6. Step 6: Final answer
    x = 663,437.38

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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.