Home / 1,242,017.20-1,863,025.80-1,230,207.40

Finding the Fourth Proportional to 1,242,017.20, 1,863,025.80 and 1,230,207.40

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Solution

The fourth proportional to 1,242,017.20, 1,863,025.80 and 1,230,207.40 is: 1,845,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,017.20 : 1,863,025.80 = 1,230,207.40 : x
  2. Step 2: Convert to fraction form
    1,242,017.20/1,863,025.80 = 1,230,207.40/x
  3. Step 3: Cross multiply
    1,242,017.20x = 1,863,025.80 × 1,230,207.40
  4. Step 4: Simplify right side
    1,242,017.20x = 2,291,908,125,550.92
  5. Step 5: Solve for x
    x = 2,291,908,125,550.92/1,242,017.20
  6. Step 6: Final answer
    x = 1,845,311.10

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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.