Home / 1,239,656.10-1,860,002.55-398,465.70

Finding the Fourth Proportional to 1,239,656.10, 1,860,002.55 and 398,465.70

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Solution

The fourth proportional to 1,239,656.10, 1,860,002.55 and 398,465.70 is: 597,865.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,656.10 : 1,860,002.55 = 398,465.70 : x
  2. Step 2: Convert to fraction form
    1,239,656.10/1,860,002.55 = 398,465.70/x
  3. Step 3: Cross multiply
    1,239,656.10x = 1,860,002.55 × 398,465.70
  4. Step 4: Simplify right side
    1,239,656.10x = 741,147,218,087.54
  5. Step 5: Solve for x
    x = 741,147,218,087.54/1,239,656.10
  6. Step 6: Final answer
    x = 597,865.18

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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.