Home / 387,059.60-579,811.80-268,864.40

Finding the Fourth Proportional to 387,059.60, 579,811.80 and 268,864.40

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Solution

The fourth proportional to 387,059.60, 579,811.80 and 268,864.40 is: 402,756.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,059.60 : 579,811.80 = 268,864.40 : x
  2. Step 2: Convert to fraction form
    387,059.60/579,811.80 = 268,864.40/x
  3. Step 3: Cross multiply
    387,059.60x = 579,811.80 × 268,864.40
  4. Step 4: Simplify right side
    387,059.60x = 155,890,751,719.92
  5. Step 5: Solve for x
    x = 155,890,751,719.92/387,059.60
  6. Step 6: Final answer
    x = 402,756.45

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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.