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Finding the Fourth Proportional to 437,794.74, 652,339.89 and 390,042.81

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Solution

The fourth proportional to 437,794.74, 652,339.89 and 390,042.81 is: 581,186.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,794.74 : 652,339.89 = 390,042.81 : x
  2. Step 2: Convert to fraction form
    437,794.74/652,339.89 = 390,042.81/x
  3. Step 3: Cross multiply
    437,794.74x = 652,339.89 × 390,042.81
  4. Step 4: Simplify right side
    437,794.74x = 254,440,483,770.69
  5. Step 5: Solve for x
    x = 254,440,483,770.69/437,794.74
  6. Step 6: Final answer
    x = 581,186.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.