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Finding the Fourth Proportional to 489,278.80, 733,918.20 and 355,877.20

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Solution

The fourth proportional to 489,278.80, 733,918.20 and 355,877.20 is: 533,815.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,278.80 : 733,918.20 = 355,877.20 : x
  2. Step 2: Convert to fraction form
    489,278.80/733,918.20 = 355,877.20/x
  3. Step 3: Cross multiply
    489,278.80x = 733,918.20 × 355,877.20
  4. Step 4: Simplify right side
    489,278.80x = 261,184,754,045.04
  5. Step 5: Solve for x
    x = 261,184,754,045.04/489,278.80
  6. Step 6: Final answer
    x = 533,815.80

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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.