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Finding the Fourth Proportional to 626,426.34, 864,474.69 and 339,948.90

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Solution

The fourth proportional to 626,426.34, 864,474.69 and 339,948.90 is: 469,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,426.34 : 864,474.69 = 339,948.90 : x
  2. Step 2: Convert to fraction form
    626,426.34/864,474.69 = 339,948.90/x
  3. Step 3: Cross multiply
    626,426.34x = 864,474.69 × 339,948.90
  4. Step 4: Simplify right side
    626,426.34x = 293,877,219,943.34
  5. Step 5: Solve for x
    x = 293,877,219,943.34/626,426.34
  6. Step 6: Final answer
    x = 469,132.92

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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.