Home / 927,640.60-1,389,848.10-427,979.80

Finding the Fourth Proportional to 927,640.60, 1,389,848.10 and 427,979.80

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Solution

The fourth proportional to 927,640.60, 1,389,848.10 and 427,979.80 is: 641,225.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,640.60 : 1,389,848.10 = 427,979.80 : x
  2. Step 2: Convert to fraction form
    927,640.60/1,389,848.10 = 427,979.80/x
  3. Step 3: Cross multiply
    927,640.60x = 1,389,848.10 × 427,979.80
  4. Step 4: Simplify right side
    927,640.60x = 594,826,911,868.38
  5. Step 5: Solve for x
    x = 594,826,911,868.38/927,640.60
  6. Step 6: Final answer
    x = 641,225.61

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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.