Home / 1,338,142-2,006,819.34-391,287.64

Finding the Fourth Proportional to 1,338,142, 2,006,819.34 and 391,287.64

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Solution

The fourth proportional to 1,338,142, 2,006,819.34 and 391,287.64 is: 586,816.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,142 : 2,006,819.34 = 391,287.64 : x
  2. Step 2: Convert to fraction form
    1,338,142/2,006,819.34 = 391,287.64/x
  3. Step 3: Cross multiply
    1,338,142x = 2,006,819.34 × 391,287.64
  4. Step 4: Simplify right side
    1,338,142x = 785,243,603,454.96
  5. Step 5: Solve for x
    x = 785,243,603,454.96/1,338,142
  6. Step 6: Final answer
    x = 586,816.35

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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.