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Finding the Fourth Proportional to 579,335.12, 799,468.80 and 321,210.80

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Solution

The fourth proportional to 579,335.12, 799,468.80 and 321,210.80 is: 443,263.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,335.12 : 799,468.80 = 321,210.80 : x
  2. Step 2: Convert to fraction form
    579,335.12/799,468.80 = 321,210.80/x
  3. Step 3: Cross multiply
    579,335.12x = 799,468.80 × 321,210.80
  4. Step 4: Simplify right side
    579,335.12x = 256,798,012,823.04
  5. Step 5: Solve for x
    x = 256,798,012,823.04/579,335.12
  6. Step 6: Final answer
    x = 443,263.33

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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.