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Finding the Fourth Proportional to 528,671.49, 729,571.91 and 286,956.15

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Solution

The fourth proportional to 528,671.49, 729,571.91 and 286,956.15 is: 396,002.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,671.49 : 729,571.91 = 286,956.15 : x
  2. Step 2: Convert to fraction form
    528,671.49/729,571.91 = 286,956.15/x
  3. Step 3: Cross multiply
    528,671.49x = 729,571.91 × 286,956.15
  4. Step 4: Simplify right side
    528,671.49x = 209,355,145,006.97
  5. Step 5: Solve for x
    x = 209,355,145,006.97/528,671.49
  6. Step 6: Final answer
    x = 396,002.34

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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.