Home / 615,087.36-921,827.20-315,313.92

Finding the Fourth Proportional to 615,087.36, 921,827.20 and 315,313.92

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Solution

The fourth proportional to 615,087.36, 921,827.20 and 315,313.92 is: 472,558.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,087.36 : 921,827.20 = 315,313.92 : x
  2. Step 2: Convert to fraction form
    615,087.36/921,827.20 = 315,313.92/x
  3. Step 3: Cross multiply
    615,087.36x = 921,827.20 × 315,313.92
  4. Step 4: Simplify right side
    615,087.36x = 290,664,947,994.62
  5. Step 5: Solve for x
    x = 290,664,947,994.62/615,087.36
  6. Step 6: Final answer
    x = 472,558.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.