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Finding the Fourth Proportional to 615,111.87, 848,835.13 and 360,632.55

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Solution

The fourth proportional to 615,111.87, 848,835.13 and 360,632.55 is: 497,661.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,111.87 : 848,835.13 = 360,632.55 : x
  2. Step 2: Convert to fraction form
    615,111.87/848,835.13 = 360,632.55/x
  3. Step 3: Cross multiply
    615,111.87x = 848,835.13 × 360,632.55
  4. Step 4: Simplify right side
    615,111.87x = 306,117,577,461.48
  5. Step 5: Solve for x
    x = 306,117,577,461.48/615,111.87
  6. Step 6: Final answer
    x = 497,661.63

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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.