Home / 740,305.40-1,021,621.80-400,773.68

Finding the Fourth Proportional to 740,305.40, 1,021,621.80 and 400,773.68

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Solution

The fourth proportional to 740,305.40, 1,021,621.80 and 400,773.68 is: 553,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,305.40 : 1,021,621.80 = 400,773.68 : x
  2. Step 2: Convert to fraction form
    740,305.40/1,021,621.80 = 400,773.68/x
  3. Step 3: Cross multiply
    740,305.40x = 1,021,621.80 × 400,773.68
  4. Step 4: Simplify right side
    740,305.40x = 409,439,128,354.22
  5. Step 5: Solve for x
    x = 409,439,128,354.22/740,305.40
  6. Step 6: Final answer
    x = 553,067.87

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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.