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Finding the Fourth Proportional to 500,020.80, 748,864.80 and 489,998.40

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Solution

The fourth proportional to 500,020.80, 748,864.80 and 489,998.40 is: 733,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,020.80 : 748,864.80 = 489,998.40 : x
  2. Step 2: Convert to fraction form
    500,020.80/748,864.80 = 489,998.40/x
  3. Step 3: Cross multiply
    500,020.80x = 748,864.80 × 489,998.40
  4. Step 4: Simplify right side
    500,020.80x = 366,942,553,816.32
  5. Step 5: Solve for x
    x = 366,942,553,816.32/500,020.80
  6. Step 6: Final answer
    x = 733,854.58

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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.