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Finding the Fourth Proportional to 878,850, 1,212,942.42 and 556,590.06

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Solution

The fourth proportional to 878,850, 1,212,942.42 and 556,590.06 is: 768,176.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,850 : 1,212,942.42 = 556,590.06 : x
  2. Step 2: Convert to fraction form
    878,850/1,212,942.42 = 556,590.06/x
  3. Step 3: Cross multiply
    878,850x = 1,212,942.42 × 556,590.06
  4. Step 4: Simplify right side
    878,850x = 675,111,694,324.35
  5. Step 5: Solve for x
    x = 675,111,694,324.35/878,850
  6. Step 6: Final answer
    x = 768,176.25

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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.