Home / 1,353,721.80-1,867,899.24-772,679.64

Finding the Fourth Proportional to 1,353,721.80, 1,867,899.24 and 772,679.64

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Solution

The fourth proportional to 1,353,721.80, 1,867,899.24 and 772,679.64 is: 1,066,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,721.80 : 1,867,899.24 = 772,679.64 : x
  2. Step 2: Convert to fraction form
    1,353,721.80/1,867,899.24 = 772,679.64/x
  3. Step 3: Cross multiply
    1,353,721.80x = 1,867,899.24 × 772,679.64
  4. Step 4: Simplify right side
    1,353,721.80x = 1,443,287,712,319.47
  5. Step 5: Solve for x
    x = 1,443,287,712,319.47/1,353,721.80
  6. Step 6: Final answer
    x = 1,066,162.72

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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.