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Finding the Fourth Proportional to 529,783.79, 731,102.49 and 288,066.15

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Solution

The fourth proportional to 529,783.79, 731,102.49 and 288,066.15 is: 397,531.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,783.79 : 731,102.49 = 288,066.15 : x
  2. Step 2: Convert to fraction form
    529,783.79/731,102.49 = 288,066.15/x
  3. Step 3: Cross multiply
    529,783.79x = 731,102.49 × 288,066.15
  4. Step 4: Simplify right side
    529,783.79x = 210,605,879,549.71
  5. Step 5: Solve for x
    x = 210,605,879,549.71/529,783.79
  6. Step 6: Final answer
    x = 397,531.76

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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.