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Finding the Fourth Proportional to 888,298.60, 1,330,479.60 and 687,969.40

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Solution

The fourth proportional to 888,298.60, 1,330,479.60 and 687,969.40 is: 1,030,429.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,298.60 : 1,330,479.60 = 687,969.40 : x
  2. Step 2: Convert to fraction form
    888,298.60/1,330,479.60 = 687,969.40/x
  3. Step 3: Cross multiply
    888,298.60x = 1,330,479.60 × 687,969.40
  4. Step 4: Simplify right side
    888,298.60x = 915,329,252,124.24
  5. Step 5: Solve for x
    x = 915,329,252,124.24/888,298.60
  6. Step 6: Final answer
    x = 1,030,429.69

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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.