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Finding the Fourth Proportional to 569,129.03, 785,388.51 and 311,000.30

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Solution

The fourth proportional to 569,129.03, 785,388.51 and 311,000.30 is: 429,175.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,129.03 : 785,388.51 = 311,000.30 : x
  2. Step 2: Convert to fraction form
    569,129.03/785,388.51 = 311,000.30/x
  3. Step 3: Cross multiply
    569,129.03x = 785,388.51 × 311,000.30
  4. Step 4: Simplify right side
    569,129.03x = 244,256,062,226.55
  5. Step 5: Solve for x
    x = 244,256,062,226.55/569,129.03
  6. Step 6: Final answer
    x = 429,175.19

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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.