Home / 864,078.60-1,294,368.30-489,664.20

Finding the Fourth Proportional to 864,078.60, 1,294,368.30 and 489,664.20

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Solution

The fourth proportional to 864,078.60, 1,294,368.30 and 489,664.20 is: 733,504.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,078.60 : 1,294,368.30 = 489,664.20 : x
  2. Step 2: Convert to fraction form
    864,078.60/1,294,368.30 = 489,664.20/x
  3. Step 3: Cross multiply
    864,078.60x = 1,294,368.30 × 489,664.20
  4. Step 4: Simplify right side
    864,078.60x = 633,805,818,124.86
  5. Step 5: Solve for x
    x = 633,805,818,124.86/864,078.60
  6. Step 6: Final answer
    x = 733,504.82

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1.5x scale

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.