Home / 740,519.04-1,021,921.18-400,987.28

Finding the Fourth Proportional to 740,519.04, 1,021,921.18 and 400,987.28

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Solution

The fourth proportional to 740,519.04, 1,021,921.18 and 400,987.28 is: 553,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,519.04 : 1,021,921.18 = 400,987.28 : x
  2. Step 2: Convert to fraction form
    740,519.04/1,021,921.18 = 400,987.28/x
  3. Step 3: Cross multiply
    740,519.04x = 1,021,921.18 × 400,987.28
  4. Step 4: Simplify right side
    740,519.04x = 409,777,394,342.59
  5. Step 5: Solve for x
    x = 409,777,394,342.59/740,519.04
  6. Step 6: Final answer
    x = 553,365.10

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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.