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Finding the Fourth Proportional to 630,063.88, 944,026.62 and 380,221

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Solution

The fourth proportional to 630,063.88, 944,026.62 and 380,221 is: 569,686.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,063.88 : 944,026.62 = 380,221 : x
  2. Step 2: Convert to fraction form
    630,063.88/944,026.62 = 380,221/x
  3. Step 3: Cross multiply
    630,063.88x = 944,026.62 × 380,221
  4. Step 4: Simplify right side
    630,063.88x = 358,938,745,483.02
  5. Step 5: Solve for x
    x = 358,938,745,483.02/630,063.88
  6. Step 6: Final answer
    x = 569,686.28

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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.