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Finding the Fourth Proportional to 569,356.30, 854,034.45 and 289,420.30

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Solution

The fourth proportional to 569,356.30, 854,034.45 and 289,420.30 is: 434,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,356.30 : 854,034.45 = 289,420.30 : x
  2. Step 2: Convert to fraction form
    569,356.30/854,034.45 = 289,420.30/x
  3. Step 3: Cross multiply
    569,356.30x = 854,034.45 × 289,420.30
  4. Step 4: Simplify right side
    569,356.30x = 247,174,906,729.34
  5. Step 5: Solve for x
    x = 247,174,906,729.34/569,356.30
  6. Step 6: Final answer
    x = 434,130.45

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.