Home / 1,272,456.42-1,908,634.76-431,008.14

Finding the Fourth Proportional to 1,272,456.42, 1,908,634.76 and 431,008.14

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Solution

The fourth proportional to 1,272,456.42, 1,908,634.76 and 431,008.14 is: 646,495.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,456.42 : 1,908,634.76 = 431,008.14 : x
  2. Step 2: Convert to fraction form
    1,272,456.42/1,908,634.76 = 431,008.14/x
  3. Step 3: Cross multiply
    1,272,456.42x = 1,908,634.76 × 431,008.14
  4. Step 4: Simplify right side
    1,272,456.42x = 822,637,117,846.95
  5. Step 5: Solve for x
    x = 822,637,117,846.95/1,272,456.42
  6. Step 6: Final answer
    x = 646,495.32

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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.