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Finding the Fourth Proportional to 615,089.76, 848,781.72 and 356,974.20

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Solution

The fourth proportional to 615,089.76, 848,781.72 and 356,974.20 is: 492,599.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,089.76 : 848,781.72 = 356,974.20 : x
  2. Step 2: Convert to fraction form
    615,089.76/848,781.72 = 356,974.20/x
  3. Step 3: Cross multiply
    615,089.76x = 848,781.72 × 356,974.20
  4. Step 4: Simplify right side
    615,089.76x = 302,993,175,471.62
  5. Step 5: Solve for x
    x = 302,993,175,471.62/615,089.76
  6. Step 6: Final answer
    x = 492,599.93

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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.