Home / 1,276,318.80-1,912,145.40-1,038,373.20

Finding the Fourth Proportional to 1,276,318.80, 1,912,145.40 and 1,038,373.20

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Solution

The fourth proportional to 1,276,318.80, 1,912,145.40 and 1,038,373.20 is: 1,555,661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,318.80 : 1,912,145.40 = 1,038,373.20 : x
  2. Step 2: Convert to fraction form
    1,276,318.80/1,912,145.40 = 1,038,373.20/x
  3. Step 3: Cross multiply
    1,276,318.80x = 1,912,145.40 × 1,038,373.20
  4. Step 4: Simplify right side
    1,276,318.80x = 1,985,520,537,863.28
  5. Step 5: Solve for x
    x = 1,985,520,537,863.28/1,276,318.80
  6. Step 6: Final answer
    x = 1,555,661.91

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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.