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Finding the Fourth Proportional to 610,749.88, 915,529.14 and 290,815.78

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Solution

The fourth proportional to 610,749.88, 915,529.14 and 290,815.78 is: 435,940.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,749.88 : 915,529.14 = 290,815.78 : x
  2. Step 2: Convert to fraction form
    610,749.88/915,529.14 = 290,815.78/x
  3. Step 3: Cross multiply
    610,749.88x = 915,529.14 × 290,815.78
  4. Step 4: Simplify right side
    610,749.88x = 266,250,320,961.83
  5. Step 5: Solve for x
    x = 266,250,320,961.83/610,749.88
  6. Step 6: Final answer
    x = 435,940.03

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1.5x scale

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.