Home / 687,417.57-1,030,880.32-238,017.78

Finding the Fourth Proportional to 687,417.57, 1,030,880.32 and 238,017.78

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Solution

The fourth proportional to 687,417.57, 1,030,880.32 and 238,017.78 is: 356,941.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,417.57 : 1,030,880.32 = 238,017.78 : x
  2. Step 2: Convert to fraction form
    687,417.57/1,030,880.32 = 238,017.78/x
  3. Step 3: Cross multiply
    687,417.57x = 1,030,880.32 × 238,017.78
  4. Step 4: Simplify right side
    687,417.57x = 245,367,844,617.05
  5. Step 5: Solve for x
    x = 245,367,844,617.05/687,417.57
  6. Step 6: Final answer
    x = 356,941.48

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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.