Home / 1,391,440-2,087,130.24-380,561.92

Finding the Fourth Proportional to 1,391,440, 2,087,130.24 and 380,561.92

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Solution

The fourth proportional to 1,391,440, 2,087,130.24 and 380,561.92 is: 570,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,440 : 2,087,130.24 = 380,561.92 : x
  2. Step 2: Convert to fraction form
    1,391,440/2,087,130.24 = 380,561.92/x
  3. Step 3: Cross multiply
    1,391,440x = 2,087,130.24 × 380,561.92
  4. Step 4: Simplify right side
    1,391,440x = 794,282,291,424.46
  5. Step 5: Solve for x
    x = 794,282,291,424.46/1,391,440
  6. Step 6: Final answer
    x = 570,834.74

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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.