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Finding the Fourth Proportional to 518,550.19, 715,596.69 and 300,802.90

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Solution

The fourth proportional to 518,550.19, 715,596.69 and 300,802.90 is: 415,106.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,550.19 : 715,596.69 = 300,802.90 : x
  2. Step 2: Convert to fraction form
    518,550.19/715,596.69 = 300,802.90/x
  3. Step 3: Cross multiply
    518,550.19x = 715,596.69 × 300,802.90
  4. Step 4: Simplify right side
    518,550.19x = 215,253,562,013.08
  5. Step 5: Solve for x
    x = 215,253,562,013.08/518,550.19
  6. Step 6: Final answer
    x = 415,106.51

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1.5x scale

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.