Home / 740,409.64-1,021,765.38-400,877.80

Finding the Fourth Proportional to 740,409.64, 1,021,765.38 and 400,877.80

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Solution

The fourth proportional to 740,409.64, 1,021,765.38 and 400,877.80 is: 553,211.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,409.64 : 1,021,765.38 = 400,877.80 : x
  2. Step 2: Convert to fraction form
    740,409.64/1,021,765.38 = 400,877.80/x
  3. Step 3: Cross multiply
    740,409.64x = 1,021,765.38 × 400,877.80
  4. Step 4: Simplify right side
    740,409.64x = 409,603,057,650.56
  5. Step 5: Solve for x
    x = 409,603,057,650.56/740,409.64
  6. Step 6: Final answer
    x = 553,211.41

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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.