Home / 1,138,367.40-1,708,207.20-428,904.60

Finding the Fourth Proportional to 1,138,367.40, 1,708,207.20 and 428,904.60

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Solution

The fourth proportional to 1,138,367.40, 1,708,207.20 and 428,904.60 is: 643,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,367.40 : 1,708,207.20 = 428,904.60 : x
  2. Step 2: Convert to fraction form
    1,138,367.40/1,708,207.20 = 428,904.60/x
  3. Step 3: Cross multiply
    1,138,367.40x = 1,708,207.20 × 428,904.60
  4. Step 4: Simplify right side
    1,138,367.40x = 732,657,925,833.12
  5. Step 5: Solve for x
    x = 732,657,925,833.12/1,138,367.40
  6. Step 6: Final answer
    x = 643,604.10

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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.