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Finding the Fourth Proportional to 839,805.90, 1,260,000.45 and 366,830.70

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Solution

The fourth proportional to 839,805.90, 1,260,000.45 and 366,830.70 is: 550,373.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,805.90 : 1,260,000.45 = 366,830.70 : x
  2. Step 2: Convert to fraction form
    839,805.90/1,260,000.45 = 366,830.70/x
  3. Step 3: Cross multiply
    839,805.90x = 1,260,000.45 × 366,830.70
  4. Step 4: Simplify right side
    839,805.90x = 462,206,847,073.82
  5. Step 5: Solve for x
    x = 462,206,847,073.82/839,805.90
  6. Step 6: Final answer
    x = 550,373.42

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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.