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Finding the Fourth Proportional to 652,644, 900,650.88 and 380,898.72

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Solution

The fourth proportional to 652,644, 900,650.88 and 380,898.72 is: 525,641.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,644 : 900,650.88 = 380,898.72 : x
  2. Step 2: Convert to fraction form
    652,644/900,650.88 = 380,898.72/x
  3. Step 3: Cross multiply
    652,644x = 900,650.88 × 380,898.72
  4. Step 4: Simplify right side
    652,644x = 343,056,767,358.87
  5. Step 5: Solve for x
    x = 343,056,767,358.87/652,644
  6. Step 6: Final answer
    x = 525,641.49

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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.