Home / 1,316,091.68-1,974,923.76-1,209,015.20

Finding the Fourth Proportional to 1,316,091.68, 1,974,923.76 and 1,209,015.20

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Solution

The fourth proportional to 1,316,091.68, 1,974,923.76 and 1,209,015.20 is: 1,814,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,091.68 : 1,974,923.76 = 1,209,015.20 : x
  2. Step 2: Convert to fraction form
    1,316,091.68/1,974,923.76 = 1,209,015.20/x
  3. Step 3: Cross multiply
    1,316,091.68x = 1,974,923.76 × 1,209,015.20
  4. Step 4: Simplify right side
    1,316,091.68x = 2,387,712,844,681.15
  5. Step 5: Solve for x
    x = 2,387,712,844,681.15/1,316,091.68
  6. Step 6: Final answer
    x = 1,814,245.07

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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.