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Finding the Fourth Proportional to 487,631.93, 672,661.23 and 283,659.89

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Solution

The fourth proportional to 487,631.93, 672,661.23 and 283,659.89 is: 391,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,631.93 : 672,661.23 = 283,659.89 : x
  2. Step 2: Convert to fraction form
    487,631.93/672,661.23 = 283,659.89/x
  3. Step 3: Cross multiply
    487,631.93x = 672,661.23 × 283,659.89
  4. Step 4: Simplify right side
    487,631.93x = 190,807,010,509.07
  5. Step 5: Solve for x
    x = 190,807,010,509.07/487,631.93
  6. Step 6: Final answer
    x = 391,293.10

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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.