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Finding the Fourth Proportional to 518,281.85, 777,485.07 and 489,938.33

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Solution

The fourth proportional to 518,281.85, 777,485.07 and 489,938.33 is: 734,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,281.85 : 777,485.07 = 489,938.33 : x
  2. Step 2: Convert to fraction form
    518,281.85/777,485.07 = 489,938.33/x
  3. Step 3: Cross multiply
    518,281.85x = 777,485.07 × 489,938.33
  4. Step 4: Simplify right side
    518,281.85x = 380,919,736,795.73
  5. Step 5: Solve for x
    x = 380,919,736,795.73/518,281.85
  6. Step 6: Final answer
    x = 734,966.38

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Double scale
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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.