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Finding the Fourth Proportional to 529,363.91, 730,526.83 and 287,646.49

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Solution

The fourth proportional to 529,363.91, 730,526.83 and 287,646.49 is: 396,954.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,363.91 : 730,526.83 = 287,646.49 : x
  2. Step 2: Convert to fraction form
    529,363.91/730,526.83 = 287,646.49/x
  3. Step 3: Cross multiply
    529,363.91x = 730,526.83 × 287,646.49
  4. Step 4: Simplify right side
    529,363.91x = 210,133,475,954.89
  5. Step 5: Solve for x
    x = 210,133,475,954.89/529,363.91
  6. Step 6: Final answer
    x = 396,954.67

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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.