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Finding the Fourth Proportional to 489,778.60, 733,890.30 and 363,807.40

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Solution

The fourth proportional to 489,778.60, 733,890.30 and 363,807.40 is: 545,133.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,778.60 : 733,890.30 = 363,807.40 : x
  2. Step 2: Convert to fraction form
    489,778.60/733,890.30 = 363,807.40/x
  3. Step 3: Cross multiply
    489,778.60x = 733,890.30 × 363,807.40
  4. Step 4: Simplify right side
    489,778.60x = 266,994,721,928.22
  5. Step 5: Solve for x
    x = 266,994,721,928.22/489,778.60
  6. Step 6: Final answer
    x = 545,133.50

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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.