Home / 529,020.15-730,047.63-287,302.78

Finding the Fourth Proportional to 529,020.15, 730,047.63 and 287,302.78

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Solution

The fourth proportional to 529,020.15, 730,047.63 and 287,302.78 is: 396,477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,020.15 : 730,047.63 = 287,302.78 : x
  2. Step 2: Convert to fraction form
    529,020.15/730,047.63 = 287,302.78/x
  3. Step 3: Cross multiply
    529,020.15x = 730,047.63 × 287,302.78
  4. Step 4: Simplify right side
    529,020.15x = 209,744,713,631.41
  5. Step 5: Solve for x
    x = 209,744,713,631.41/529,020.15
  6. Step 6: Final answer
    x = 396,477.74

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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.