Home / 1,138,373.40-1,708,216.20-428,910.60

Finding the Fourth Proportional to 1,138,373.40, 1,708,216.20 and 428,910.60

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Solution

The fourth proportional to 1,138,373.40, 1,708,216.20 and 428,910.60 is: 643,613.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,373.40 : 1,708,216.20 = 428,910.60 : x
  2. Step 2: Convert to fraction form
    1,138,373.40/1,708,216.20 = 428,910.60/x
  3. Step 3: Cross multiply
    1,138,373.40x = 1,708,216.20 × 428,910.60
  4. Step 4: Simplify right side
    1,138,373.40x = 732,672,035,271.72
  5. Step 5: Solve for x
    x = 732,672,035,271.72/1,138,373.40
  6. Step 6: Final answer
    x = 643,613.10

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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.