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Finding the Fourth Proportional to 418,701.60, 628,052.40 and 397,050.30

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Solution

The fourth proportional to 418,701.60, 628,052.40 and 397,050.30 is: 595,575.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,701.60 : 628,052.40 = 397,050.30 : x
  2. Step 2: Convert to fraction form
    418,701.60/628,052.40 = 397,050.30/x
  3. Step 3: Cross multiply
    418,701.60x = 628,052.40 × 397,050.30
  4. Step 4: Simplify right side
    418,701.60x = 249,368,393,835.72
  5. Step 5: Solve for x
    x = 249,368,393,835.72/418,701.60
  6. Step 6: Final answer
    x = 595,575.45

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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.