Home / 728,681.40-1,093,175.70-307,740.60

Finding the Fourth Proportional to 728,681.40, 1,093,175.70 and 307,740.60

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Solution

The fourth proportional to 728,681.40, 1,093,175.70 and 307,740.60 is: 461,675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,681.40 : 1,093,175.70 = 307,740.60 : x
  2. Step 2: Convert to fraction form
    728,681.40/1,093,175.70 = 307,740.60/x
  3. Step 3: Cross multiply
    728,681.40x = 1,093,175.70 × 307,740.60
  4. Step 4: Simplify right side
    728,681.40x = 336,414,545,823.42
  5. Step 5: Solve for x
    x = 336,414,545,823.42/728,681.40
  6. Step 6: Final answer
    x = 461,675.77

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1.5x scale

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.