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Finding the Fourth Proportional to 615,298.86, 848,875.68 and 385,456.14

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Solution

The fourth proportional to 615,298.86, 848,875.68 and 385,456.14 is: 531,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,298.86 : 848,875.68 = 385,456.14 : x
  2. Step 2: Convert to fraction form
    615,298.86/848,875.68 = 385,456.14/x
  3. Step 3: Cross multiply
    615,298.86x = 848,875.68 × 385,456.14
  4. Step 4: Simplify right side
    615,298.86x = 327,204,342,952.68
  5. Step 5: Solve for x
    x = 327,204,342,952.68/615,298.86
  6. Step 6: Final answer
    x = 531,781.16

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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.