Home / 1,375,742.89-1,898,525.16-772,130.89

Finding the Fourth Proportional to 1,375,742.89, 1,898,525.16 and 772,130.89

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Solution

The fourth proportional to 1,375,742.89, 1,898,525.16 and 772,130.89 is: 1,065,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,742.89 : 1,898,525.16 = 772,130.89 : x
  2. Step 2: Convert to fraction form
    1,375,742.89/1,898,525.16 = 772,130.89/x
  3. Step 3: Cross multiply
    1,375,742.89x = 1,898,525.16 × 772,130.89
  4. Step 4: Simplify right side
    1,375,742.89x = 1,465,909,921,478.19
  5. Step 5: Solve for x
    x = 1,465,909,921,478.19/1,375,742.89
  6. Step 6: Final answer
    x = 1,065,540.61

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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.