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Finding the Fourth Proportional to 640,366.52, 883,724.07 and 349,994.21

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Solution

The fourth proportional to 640,366.52, 883,724.07 and 349,994.21 is: 483,002.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,366.52 : 883,724.07 = 349,994.21 : x
  2. Step 2: Convert to fraction form
    640,366.52/883,724.07 = 349,994.21/x
  3. Step 3: Cross multiply
    640,366.52x = 883,724.07 × 349,994.21
  4. Step 4: Simplify right side
    640,366.52x = 309,298,304,631.49
  5. Step 5: Solve for x
    x = 309,298,304,631.49/640,366.52
  6. Step 6: Final answer
    x = 483,002.00

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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.