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Finding the Fourth Proportional to 529,533.36, 730,760.88 and 287,816.49

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Solution

The fourth proportional to 529,533.36, 730,760.88 and 287,816.49 is: 397,189.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,533.36 : 730,760.88 = 287,816.49 : x
  2. Step 2: Convert to fraction form
    529,533.36/730,760.88 = 287,816.49/x
  3. Step 3: Cross multiply
    529,533.36x = 730,760.88 × 287,816.49
  4. Step 4: Simplify right side
    529,533.36x = 210,325,031,510.91
  5. Step 5: Solve for x
    x = 210,325,031,510.91/529,533.36
  6. Step 6: Final answer
    x = 397,189.39

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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.