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Finding the Fourth Proportional to 570,491.44, 854,475.79 and 390,149.47

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Solution

The fourth proportional to 570,491.44, 854,475.79 and 390,149.47 is: 584,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,491.44 : 854,475.79 = 390,149.47 : x
  2. Step 2: Convert to fraction form
    570,491.44/854,475.79 = 390,149.47/x
  3. Step 3: Cross multiply
    570,491.44x = 854,475.79 × 390,149.47
  4. Step 4: Simplify right side
    570,491.44x = 333,373,276,596.33
  5. Step 5: Solve for x
    x = 333,373,276,596.33/570,491.44
  6. Step 6: Final answer
    x = 584,361.58

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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.