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Finding the Fourth Proportional to 640,529.14, 884,018.10 and 368,591.48

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Solution

The fourth proportional to 640,529.14, 884,018.10 and 368,591.48 is: 508,706.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,529.14 : 884,018.10 = 368,591.48 : x
  2. Step 2: Convert to fraction form
    640,529.14/884,018.10 = 368,591.48/x
  3. Step 3: Cross multiply
    640,529.14x = 884,018.10 × 368,591.48
  4. Step 4: Simplify right side
    640,529.14x = 325,841,539,825.79
  5. Step 5: Solve for x
    x = 325,841,539,825.79/640,529.14
  6. Step 6: Final answer
    x = 508,706.82

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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.