Home / 1,572,421.12-2,170,001.28-857,029.12

Finding the Fourth Proportional to 1,572,421.12, 2,170,001.28 and 857,029.12

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Solution

The fourth proportional to 1,572,421.12, 2,170,001.28 and 857,029.12 is: 1,182,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572,421.12 : 2,170,001.28 = 857,029.12 : x
  2. Step 2: Convert to fraction form
    1,572,421.12/2,170,001.28 = 857,029.12/x
  3. Step 3: Cross multiply
    1,572,421.12x = 2,170,001.28 × 857,029.12
  4. Step 4: Simplify right side
    1,572,421.12x = 1,859,754,287,397.27
  5. Step 5: Solve for x
    x = 1,859,754,287,397.27/1,572,421.12
  6. Step 6: Final answer
    x = 1,182,732.96

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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.