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Finding the Fourth Proportional to 661,690.74, 992,001.48 and 256,673.82

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Solution

The fourth proportional to 661,690.74, 992,001.48 and 256,673.82 is: 384,803.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,690.74 : 992,001.48 = 256,673.82 : x
  2. Step 2: Convert to fraction form
    661,690.74/992,001.48 = 256,673.82/x
  3. Step 3: Cross multiply
    661,690.74x = 992,001.48 × 256,673.82
  4. Step 4: Simplify right side
    661,690.74x = 254,620,813,518.52
  5. Step 5: Solve for x
    x = 254,620,813,518.52/661,690.74
  6. Step 6: Final answer
    x = 384,803.35

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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.