Home / 1,239,280.40-1,859,179.80-397,917.20

Finding the Fourth Proportional to 1,239,280.40, 1,859,179.80 and 397,917.20

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Solution

The fourth proportional to 1,239,280.40, 1,859,179.80 and 397,917.20 is: 596,959.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239,280.40 : 1,859,179.80 = 397,917.20 : x
  2. Step 2: Convert to fraction form
    1,239,280.40/1,859,179.80 = 397,917.20/x
  3. Step 3: Cross multiply
    1,239,280.40x = 1,859,179.80 × 397,917.20
  4. Step 4: Simplify right side
    1,239,280.40x = 739,799,620,312.56
  5. Step 5: Solve for x
    x = 739,799,620,312.56/1,239,280.40
  6. Step 6: Final answer
    x = 596,959.03

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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.