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Finding the Fourth Proportional to 640,004.30, 883,196.76 and 349,612.41

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Solution

The fourth proportional to 640,004.30, 883,196.76 and 349,612.41 is: 482,460.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,004.30 : 883,196.76 = 349,612.41 : x
  2. Step 2: Convert to fraction form
    640,004.30/883,196.76 = 349,612.41/x
  3. Step 3: Cross multiply
    640,004.30x = 883,196.76 × 349,612.41
  4. Step 4: Simplify right side
    640,004.30x = 308,776,552,390.83
  5. Step 5: Solve for x
    x = 308,776,552,390.83/640,004.30
  6. Step 6: Final answer
    x = 482,460.12

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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.