Home / 853,821.65-1,282,208.70-455,240.90

Finding the Fourth Proportional to 853,821.65, 1,282,208.70 and 455,240.90

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Solution

The fourth proportional to 853,821.65, 1,282,208.70 and 455,240.90 is: 683,648.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,821.65 : 1,282,208.70 = 455,240.90 : x
  2. Step 2: Convert to fraction form
    853,821.65/1,282,208.70 = 455,240.90/x
  3. Step 3: Cross multiply
    853,821.65x = 1,282,208.70 × 455,240.90
  4. Step 4: Simplify right side
    853,821.65x = 583,713,842,575.83
  5. Step 5: Solve for x
    x = 583,713,842,575.83/853,821.65
  6. Step 6: Final answer
    x = 683,648.44

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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.