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Finding the Fourth Proportional to 520,738.94, 780,099.60 and 295,417.78

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Solution

The fourth proportional to 520,738.94, 780,099.60 and 295,417.78 is: 442,554.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,738.94 : 780,099.60 = 295,417.78 : x
  2. Step 2: Convert to fraction form
    520,738.94/780,099.60 = 295,417.78/x
  3. Step 3: Cross multiply
    520,738.94x = 780,099.60 × 295,417.78
  4. Step 4: Simplify right side
    520,738.94x = 230,455,292,010.89
  5. Step 5: Solve for x
    x = 230,455,292,010.89/520,738.94
  6. Step 6: Final answer
    x = 442,554.37

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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.