Home / 724,813.20-1,088,386.20-489,200.40

Finding the Fourth Proportional to 724,813.20, 1,088,386.20 and 489,200.40

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Solution

The fourth proportional to 724,813.20, 1,088,386.20 and 489,200.40 is: 734,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,813.20 : 1,088,386.20 = 489,200.40 : x
  2. Step 2: Convert to fraction form
    724,813.20/1,088,386.20 = 489,200.40/x
  3. Step 3: Cross multiply
    724,813.20x = 1,088,386.20 × 489,200.40
  4. Step 4: Simplify right side
    724,813.20x = 532,438,964,394.48
  5. Step 5: Solve for x
    x = 532,438,964,394.48/724,813.20
  6. Step 6: Final answer
    x = 734,587.84

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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.