Home / 1,355,857.54-1,871,959.92-840,158.68

Finding the Fourth Proportional to 1,355,857.54, 1,871,959.92 and 840,158.68

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Solution

The fourth proportional to 1,355,857.54, 1,871,959.92 and 840,158.68 is: 1,159,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355,857.54 : 1,871,959.92 = 840,158.68 : x
  2. Step 2: Convert to fraction form
    1,355,857.54/1,871,959.92 = 840,158.68/x
  3. Step 3: Cross multiply
    1,355,857.54x = 1,871,959.92 × 840,158.68
  4. Step 4: Simplify right side
    1,355,857.54x = 1,572,743,375,400.11
  5. Step 5: Solve for x
    x = 1,572,743,375,400.11/1,355,857.54
  6. Step 6: Final answer
    x = 1,159,962.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.