Home / 687,410.40-1,030,701.36-308,262.60

Finding the Fourth Proportional to 687,410.40, 1,030,701.36 and 308,262.60

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Solution

The fourth proportional to 687,410.40, 1,030,701.36 and 308,262.60 is: 462,208.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,410.40 : 1,030,701.36 = 308,262.60 : x
  2. Step 2: Convert to fraction form
    687,410.40/1,030,701.36 = 308,262.60/x
  3. Step 3: Cross multiply
    687,410.40x = 1,030,701.36 × 308,262.60
  4. Step 4: Simplify right side
    687,410.40x = 317,726,681,057.14
  5. Step 5: Solve for x
    x = 317,726,681,057.14/687,410.40
  6. Step 6: Final answer
    x = 462,208.14

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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.