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Finding the Fourth Proportional to 615,210.78, 848,992.96 and 343,273.74

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Solution

The fourth proportional to 615,210.78, 848,992.96 and 343,273.74 is: 473,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,210.78 : 848,992.96 = 343,273.74 : x
  2. Step 2: Convert to fraction form
    615,210.78/848,992.96 = 343,273.74/x
  3. Step 3: Cross multiply
    615,210.78x = 848,992.96 × 343,273.74
  4. Step 4: Simplify right side
    615,210.78x = 291,436,988,612.87
  5. Step 5: Solve for x
    x = 291,436,988,612.87/615,210.78
  6. Step 6: Final answer
    x = 473,718.92

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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.