Home / 1,041.32-1,436.63-621.74

Finding the Fourth Proportional to 1,041.32, 1,436.63 and 621.74

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Solution

The fourth proportional to 1,041.32, 1,436.63 and 621.74 is: 857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.32 : 1,436.63 = 621.74 : x
  2. Step 2: Convert to fraction form
    1,041.32/1,436.63 = 621.74/x
  3. Step 3: Cross multiply
    1,041.32x = 1,436.63 × 621.74
  4. Step 4: Simplify right side
    1,041.32x = 893,200.04
  5. Step 5: Solve for x
    x = 893,200.04/1,041.32
  6. Step 6: Final answer
    x = 857.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.