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Finding the Fourth Proportional to 888,698.32, 1,226,400.35 and 480,798.86

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Solution

The fourth proportional to 888,698.32, 1,226,400.35 and 480,798.86 is: 663,500.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,698.32 : 1,226,400.35 = 480,798.86 : x
  2. Step 2: Convert to fraction form
    888,698.32/1,226,400.35 = 480,798.86/x
  3. Step 3: Cross multiply
    888,698.32x = 1,226,400.35 × 480,798.86
  4. Step 4: Simplify right side
    888,698.32x = 589,651,881,647.61
  5. Step 5: Solve for x
    x = 589,651,881,647.61/888,698.32
  6. Step 6: Final answer
    x = 663,500.62

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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.