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Finding the Fourth Proportional to 666,756.74, 920,117.13 and 360,826.36

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Solution

The fourth proportional to 666,756.74, 920,117.13 and 360,826.36 is: 497,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,756.74 : 920,117.13 = 360,826.36 : x
  2. Step 2: Convert to fraction form
    666,756.74/920,117.13 = 360,826.36/x
  3. Step 3: Cross multiply
    666,756.74x = 920,117.13 × 360,826.36
  4. Step 4: Simplify right side
    666,756.74x = 332,002,514,791.55
  5. Step 5: Solve for x
    x = 332,002,514,791.55/666,756.74
  6. Step 6: Final answer
    x = 497,936.50

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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.