Home / 3,931,806.80-5,897,712.40-1,091,918.72

Finding the Fourth Proportional to 3,931,806.80, 5,897,712.40 and 1,091,918.72

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Solution

The fourth proportional to 3,931,806.80, 5,897,712.40 and 1,091,918.72 is: 1,637,878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931,806.80 : 5,897,712.40 = 1,091,918.72 : x
  2. Step 2: Convert to fraction form
    3,931,806.80/5,897,712.40 = 1,091,918.72/x
  3. Step 3: Cross multiply
    3,931,806.80x = 5,897,712.40 × 1,091,918.72
  4. Step 4: Simplify right side
    3,931,806.80x = 6,439,822,574,736.13
  5. Step 5: Solve for x
    x = 6,439,822,574,736.13/3,931,806.80
  6. Step 6: Final answer
    x = 1,637,878.69

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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.