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Finding the Fourth Proportional to 529,144.04, 730,220.16 and 287,424.65

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Solution

The fourth proportional to 529,144.04, 730,220.16 and 287,424.65 is: 396,646.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,144.04 : 730,220.16 = 287,424.65 : x
  2. Step 2: Convert to fraction form
    529,144.04/730,220.16 = 287,424.65/x
  3. Step 3: Cross multiply
    529,144.04x = 730,220.16 × 287,424.65
  4. Step 4: Simplify right side
    529,144.04x = 209,883,276,814.34
  5. Step 5: Solve for x
    x = 209,883,276,814.34/529,144.04
  6. Step 6: Final answer
    x = 396,646.77

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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.