Home / 740,496.54-1,021,890.12-400,964.78

Finding the Fourth Proportional to 740,496.54, 1,021,890.12 and 400,964.78

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Solution

The fourth proportional to 740,496.54, 1,021,890.12 and 400,964.78 is: 553,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,496.54 : 1,021,890.12 = 400,964.78 : x
  2. Step 2: Convert to fraction form
    740,496.54/1,021,890.12 = 400,964.78/x
  3. Step 3: Cross multiply
    740,496.54x = 1,021,890.12 × 400,964.78
  4. Step 4: Simplify right side
    740,496.54x = 409,741,947,149.97
  5. Step 5: Solve for x
    x = 409,741,947,149.97/740,496.54
  6. Step 6: Final answer
    x = 553,334.05

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1.5x scale

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.