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Finding the Fourth Proportional to 576,064.80, 794,966.40 and 321,415.56

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Solution

The fourth proportional to 576,064.80, 794,966.40 and 321,415.56 is: 443,551.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,064.80 : 794,966.40 = 321,415.56 : x
  2. Step 2: Convert to fraction form
    576,064.80/794,966.40 = 321,415.56/x
  3. Step 3: Cross multiply
    576,064.80x = 794,966.40 × 321,415.56
  4. Step 4: Simplify right side
    576,064.80x = 255,514,570,637.18
  5. Step 5: Solve for x
    x = 255,514,570,637.18/576,064.80
  6. Step 6: Final answer
    x = 443,551.79

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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.