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Finding the Fourth Proportional to 579,602.90, 799,775.70 and 321,476.78

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Solution

The fourth proportional to 579,602.90, 799,775.70 and 321,476.78 is: 443,595.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,602.90 : 799,775.70 = 321,476.78 : x
  2. Step 2: Convert to fraction form
    579,602.90/799,775.70 = 321,476.78/x
  3. Step 3: Cross multiply
    579,602.90x = 799,775.70 × 321,476.78
  4. Step 4: Simplify right side
    579,602.90x = 257,109,316,758.25
  5. Step 5: Solve for x
    x = 257,109,316,758.25/579,602.90
  6. Step 6: Final answer
    x = 443,595.64

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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.