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Finding the Fourth Proportional to 529,287.70, 793,931.55 and 520,071.70

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Solution

The fourth proportional to 529,287.70, 793,931.55 and 520,071.70 is: 780,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,287.70 : 793,931.55 = 520,071.70 : x
  2. Step 2: Convert to fraction form
    529,287.70/793,931.55 = 520,071.70/x
  3. Step 3: Cross multiply
    529,287.70x = 793,931.55 × 520,071.70
  4. Step 4: Simplify right side
    529,287.70x = 412,901,330,892.14
  5. Step 5: Solve for x
    x = 412,901,330,892.14/529,287.70
  6. Step 6: Final answer
    x = 780,107.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.