Home / 853,801.65-1,282,178.70-455,220.90

Finding the Fourth Proportional to 853,801.65, 1,282,178.70 and 455,220.90

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Solution

The fourth proportional to 853,801.65, 1,282,178.70 and 455,220.90 is: 683,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,801.65 : 1,282,178.70 = 455,220.90 : x
  2. Step 2: Convert to fraction form
    853,801.65/1,282,178.70 = 455,220.90/x
  3. Step 3: Cross multiply
    853,801.65x = 1,282,178.70 × 455,220.90
  4. Step 4: Simplify right side
    853,801.65x = 583,674,541,774.83
  5. Step 5: Solve for x
    x = 583,674,541,774.83/853,801.65
  6. Step 6: Final answer
    x = 683,618.43

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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.