Home / 387,071.60-579,829.80-268,876.40

Finding the Fourth Proportional to 387,071.60, 579,829.80 and 268,876.40

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Solution

The fourth proportional to 387,071.60, 579,829.80 and 268,876.40 is: 402,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,071.60 : 579,829.80 = 268,876.40 : x
  2. Step 2: Convert to fraction form
    387,071.60/579,829.80 = 268,876.40/x
  3. Step 3: Cross multiply
    387,071.60x = 579,829.80 × 268,876.40
  4. Step 4: Simplify right side
    387,071.60x = 155,902,549,236.72
  5. Step 5: Solve for x
    x = 155,902,549,236.72/387,071.60
  6. Step 6: Final answer
    x = 402,774.45

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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.