Home / 740,040.90-1,021,259.52-400,509.12

Finding the Fourth Proportional to 740,040.90, 1,021,259.52 and 400,509.12

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Solution

The fourth proportional to 740,040.90, 1,021,259.52 and 400,509.12 is: 552,704.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,040.90 : 1,021,259.52 = 400,509.12 : x
  2. Step 2: Convert to fraction form
    740,040.90/1,021,259.52 = 400,509.12/x
  3. Step 3: Cross multiply
    740,040.90x = 1,021,259.52 × 400,509.12
  4. Step 4: Simplify right side
    740,040.90x = 409,023,751,646.82
  5. Step 5: Solve for x
    x = 409,023,751,646.82/740,040.90
  6. Step 6: Final answer
    x = 552,704.25

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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.