Home / 1,170,060.40-1,754,629.80-421,721.20

Finding the Fourth Proportional to 1,170,060.40, 1,754,629.80 and 421,721.20

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Solution

The fourth proportional to 1,170,060.40, 1,754,629.80 and 421,721.20 is: 632,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,060.40 : 1,754,629.80 = 421,721.20 : x
  2. Step 2: Convert to fraction form
    1,170,060.40/1,754,629.80 = 421,721.20/x
  3. Step 3: Cross multiply
    1,170,060.40x = 1,754,629.80 × 421,721.20
  4. Step 4: Simplify right side
    1,170,060.40x = 739,964,584,811.76
  5. Step 5: Solve for x
    x = 739,964,584,811.76/1,170,060.40
  6. Step 6: Final answer
    x = 632,415.72

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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.