Home / 740,003.78-1,021,206.48-400,472.30

Finding the Fourth Proportional to 740,003.78, 1,021,206.48 and 400,472.30

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Solution

The fourth proportional to 740,003.78, 1,021,206.48 and 400,472.30 is: 552,652.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,003.78 : 1,021,206.48 = 400,472.30 : x
  2. Step 2: Convert to fraction form
    740,003.78/1,021,206.48 = 400,472.30/x
  3. Step 3: Cross multiply
    740,003.78x = 1,021,206.48 × 400,472.30
  4. Step 4: Simplify right side
    740,003.78x = 408,964,907,820.50
  5. Step 5: Solve for x
    x = 408,964,907,820.50/740,003.78
  6. Step 6: Final answer
    x = 552,652.46

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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.