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Finding the Fourth Proportional to 626,634.72, 864,771.59 and 340,154.80

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Solution

The fourth proportional to 626,634.72, 864,771.59 and 340,154.80 is: 469,422.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,634.72 : 864,771.59 = 340,154.80 : x
  2. Step 2: Convert to fraction form
    626,634.72/864,771.59 = 340,154.80/x
  3. Step 3: Cross multiply
    626,634.72x = 864,771.59 × 340,154.80
  4. Step 4: Simplify right side
    626,634.72x = 294,156,207,242.13
  5. Step 5: Solve for x
    x = 294,156,207,242.13/626,634.72
  6. Step 6: Final answer
    x = 469,422.13

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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.