Home / 1,620,074.61-2,234,028.38-1,391,389.11

Finding the Fourth Proportional to 1,620,074.61, 2,234,028.38 and 1,391,389.11

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Solution

The fourth proportional to 1,620,074.61, 2,234,028.38 and 1,391,389.11 is: 1,918,678.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,074.61 : 2,234,028.38 = 1,391,389.11 : x
  2. Step 2: Convert to fraction form
    1,620,074.61/2,234,028.38 = 1,391,389.11/x
  3. Step 3: Cross multiply
    1,620,074.61x = 2,234,028.38 × 1,391,389.11
  4. Step 4: Simplify right side
    1,620,074.61x = 3,108,402,748,192.80
  5. Step 5: Solve for x
    x = 3,108,402,748,192.80/1,620,074.61
  6. Step 6: Final answer
    x = 1,918,678.77

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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.