Home / 641,818.20-885,703.02-369,786.36

Finding the Fourth Proportional to 641,818.20, 885,703.02 and 369,786.36

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Solution

The fourth proportional to 641,818.20, 885,703.02 and 369,786.36 is: 510,301.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,818.20 : 885,703.02 = 369,786.36 : x
  2. Step 2: Convert to fraction form
    641,818.20/885,703.02 = 369,786.36/x
  3. Step 3: Cross multiply
    641,818.20x = 885,703.02 × 369,786.36
  4. Step 4: Simplify right side
    641,818.20x = 327,520,895,806.81
  5. Step 5: Solve for x
    x = 327,520,895,806.81/641,818.20
  6. Step 6: Final answer
    x = 510,301.66

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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.