Home / 1,381,190.40-2,071,907.10-421,862.58

Finding the Fourth Proportional to 1,381,190.40, 2,071,907.10 and 421,862.58

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Solution

The fourth proportional to 1,381,190.40, 2,071,907.10 and 421,862.58 is: 632,830.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,190.40 : 2,071,907.10 = 421,862.58 : x
  2. Step 2: Convert to fraction form
    1,381,190.40/2,071,907.10 = 421,862.58/x
  3. Step 3: Cross multiply
    1,381,190.40x = 2,071,907.10 × 421,862.58
  4. Step 4: Simplify right side
    1,381,190.40x = 874,060,074,726.32
  5. Step 5: Solve for x
    x = 874,060,074,726.32/1,381,190.40
  6. Step 6: Final answer
    x = 632,830.98

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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.