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Finding the Fourth Proportional to 487,720.80, 673,284.80 and 366,908.08

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Solution

The fourth proportional to 487,720.80, 673,284.80 and 366,908.08 is: 506,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,720.80 : 673,284.80 = 366,908.08 : x
  2. Step 2: Convert to fraction form
    487,720.80/673,284.80 = 366,908.08/x
  3. Step 3: Cross multiply
    487,720.80x = 673,284.80 × 366,908.08
  4. Step 4: Simplify right side
    487,720.80x = 247,033,633,261.18
  5. Step 5: Solve for x
    x = 247,033,633,261.18/487,720.80
  6. Step 6: Final answer
    x = 506,506.25

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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.