Home / 1,380,125.97-2,070,070.02-840,242.45

Finding the Fourth Proportional to 1,380,125.97, 2,070,070.02 and 840,242.45

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Solution

The fourth proportional to 1,380,125.97, 2,070,070.02 and 840,242.45 is: 1,260,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,125.97 : 2,070,070.02 = 840,242.45 : x
  2. Step 2: Convert to fraction form
    1,380,125.97/2,070,070.02 = 840,242.45/x
  3. Step 3: Cross multiply
    1,380,125.97x = 2,070,070.02 × 840,242.45
  4. Step 4: Simplify right side
    1,380,125.97x = 1,739,360,710,451.52
  5. Step 5: Solve for x
    x = 1,739,360,710,451.52/1,380,125.97
  6. Step 6: Final answer
    x = 1,260,291.27

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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.