Home / 862,800.30-1,294,200.45-489,552.30

Finding the Fourth Proportional to 862,800.30, 1,294,200.45 and 489,552.30

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Solution

The fourth proportional to 862,800.30, 1,294,200.45 and 489,552.30 is: 734,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,800.30 : 1,294,200.45 = 489,552.30 : x
  2. Step 2: Convert to fraction form
    862,800.30/1,294,200.45 = 489,552.30/x
  3. Step 3: Cross multiply
    862,800.30x = 1,294,200.45 × 489,552.30
  4. Step 4: Simplify right side
    862,800.30x = 633,578,806,958.54
  5. Step 5: Solve for x
    x = 633,578,806,958.54/862,800.30
  6. Step 6: Final answer
    x = 734,328.45

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Half scale
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Double scale
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Similar ratio
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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.