Home / 615,428.62-848,621.98-400,169.50

Finding the Fourth Proportional to 615,428.62, 848,621.98 and 400,169.50

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Solution

The fourth proportional to 615,428.62, 848,621.98 and 400,169.50 is: 551,798.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,428.62 : 848,621.98 = 400,169.50 : x
  2. Step 2: Convert to fraction form
    615,428.62/848,621.98 = 400,169.50/x
  3. Step 3: Cross multiply
    615,428.62x = 848,621.98 × 400,169.50
  4. Step 4: Simplify right side
    615,428.62x = 339,592,633,425.61
  5. Step 5: Solve for x
    x = 339,592,633,425.61/615,428.62
  6. Step 6: Final answer
    x = 551,798.57

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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.