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Finding the Fourth Proportional to 626,858.40, 940,690.80 and 346,576.80

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Solution

The fourth proportional to 626,858.40, 940,690.80 and 346,576.80 is: 520,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,858.40 : 940,690.80 = 346,576.80 : x
  2. Step 2: Convert to fraction form
    626,858.40/940,690.80 = 346,576.80/x
  3. Step 3: Cross multiply
    626,858.40x = 940,690.80 × 346,576.80
  4. Step 4: Simplify right side
    626,858.40x = 326,021,607,253.44
  5. Step 5: Solve for x
    x = 326,021,607,253.44/626,858.40
  6. Step 6: Final answer
    x = 520,088.12

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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.