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Finding the Fourth Proportional to 630,902.21, 870,640.62 and 344,422.29

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Solution

The fourth proportional to 630,902.21, 870,640.62 and 344,422.29 is: 475,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,902.21 : 870,640.62 = 344,422.29 : x
  2. Step 2: Convert to fraction form
    630,902.21/870,640.62 = 344,422.29/x
  3. Step 3: Cross multiply
    630,902.21x = 870,640.62 × 344,422.29
  4. Step 4: Simplify right side
    630,902.21x = 299,868,034,385.31
  5. Step 5: Solve for x
    x = 299,868,034,385.31/630,902.21
  6. Step 6: Final answer
    x = 475,300.34

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1.5x scale

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.