Home / 687,293.78-1,030,526.36-308,145.95

Finding the Fourth Proportional to 687,293.78, 1,030,526.36 and 308,145.95

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Solution

The fourth proportional to 687,293.78, 1,030,526.36 and 308,145.95 is: 462,033.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,293.78 : 1,030,526.36 = 308,145.95 : x
  2. Step 2: Convert to fraction form
    687,293.78/1,030,526.36 = 308,145.95/x
  3. Step 3: Cross multiply
    687,293.78x = 1,030,526.36 × 308,145.95
  4. Step 4: Simplify right side
    687,293.78x = 317,552,517,508.88
  5. Step 5: Solve for x
    x = 317,552,517,508.88/687,293.78
  6. Step 6: Final answer
    x = 462,033.16

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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.