Home / 1,021,689.72-1,532,534.88-421,991.76

Finding the Fourth Proportional to 1,021,689.72, 1,532,534.88 and 421,991.76

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Solution

The fourth proportional to 1,021,689.72, 1,532,534.88 and 421,991.76 is: 632,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,689.72 : 1,532,534.88 = 421,991.76 : x
  2. Step 2: Convert to fraction form
    1,021,689.72/1,532,534.88 = 421,991.76/x
  3. Step 3: Cross multiply
    1,021,689.72x = 1,532,534.88 × 421,991.76
  4. Step 4: Simplify right side
    1,021,689.72x = 646,717,091,272.59
  5. Step 5: Solve for x
    x = 646,717,091,272.59/1,021,689.72
  6. Step 6: Final answer
    x = 632,987.76

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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.