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Finding the Fourth Proportional to 520,063.10, 778,539.45 and 489,304.70

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Solution

The fourth proportional to 520,063.10, 778,539.45 and 489,304.70 is: 732,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,063.10 : 778,539.45 = 489,304.70 : x
  2. Step 2: Convert to fraction form
    520,063.10/778,539.45 = 489,304.70/x
  3. Step 3: Cross multiply
    520,063.10x = 778,539.45 × 489,304.70
  4. Step 4: Simplify right side
    520,063.10x = 380,943,012,020.42
  5. Step 5: Solve for x
    x = 380,943,012,020.42/520,063.10
  6. Step 6: Final answer
    x = 732,493.83

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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.