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Finding the Fourth Proportional to 640,048.58, 883,234.56 and 353,513.31

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Solution

The fourth proportional to 640,048.58, 883,234.56 and 353,513.31 is: 487,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,048.58 : 883,234.56 = 353,513.31 : x
  2. Step 2: Convert to fraction form
    640,048.58/883,234.56 = 353,513.31/x
  3. Step 3: Cross multiply
    640,048.58x = 883,234.56 × 353,513.31
  4. Step 4: Simplify right side
    640,048.58x = 312,235,172,811.99
  5. Step 5: Solve for x
    x = 312,235,172,811.99/640,048.58
  6. Step 6: Final answer
    x = 487,830.43

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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.