Home / 740,121.71-1,021,259.21-413,394.47

Finding the Fourth Proportional to 740,121.71, 1,021,259.21 and 413,394.47

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Solution

The fourth proportional to 740,121.71, 1,021,259.21 and 413,394.47 is: 570,423.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,121.71 : 1,021,259.21 = 413,394.47 : x
  2. Step 2: Convert to fraction form
    740,121.71/1,021,259.21 = 413,394.47/x
  3. Step 3: Cross multiply
    740,121.71x = 1,021,259.21 × 413,394.47
  4. Step 4: Simplify right side
    740,121.71x = 422,182,906,507.02
  5. Step 5: Solve for x
    x = 422,182,906,507.02/740,121.71
  6. Step 6: Final answer
    x = 570,423.63

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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.