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Finding the Fourth Proportional to 626,648.76, 864,776.39 and 340,169.04

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Solution

The fourth proportional to 626,648.76, 864,776.39 and 340,169.04 is: 469,433.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,648.76 : 864,776.39 = 340,169.04 : x
  2. Step 2: Convert to fraction form
    626,648.76/864,776.39 = 340,169.04/x
  3. Step 3: Cross multiply
    626,648.76x = 864,776.39 × 340,169.04
  4. Step 4: Simplify right side
    626,648.76x = 294,170,152,700.12
  5. Step 5: Solve for x
    x = 294,170,152,700.12/626,648.76
  6. Step 6: Final answer
    x = 469,433.87

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.