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Finding the Fourth Proportional to 578,454.64, 798,257.39 and 320,326.47

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Solution

The fourth proportional to 578,454.64, 798,257.39 and 320,326.47 is: 442,044.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,454.64 : 798,257.39 = 320,326.47 : x
  2. Step 2: Convert to fraction form
    578,454.64/798,257.39 = 320,326.47/x
  3. Step 3: Cross multiply
    578,454.64x = 798,257.39 × 320,326.47
  4. Step 4: Simplify right side
    578,454.64x = 255,702,974,686.57
  5. Step 5: Solve for x
    x = 255,702,974,686.57/578,454.64
  6. Step 6: Final answer
    x = 442,044.99

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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.