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Finding the Fourth Proportional to 520,364.24, 780,670.59 and 165,378.91

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Solution

The fourth proportional to 520,364.24, 780,670.59 and 165,378.91 is: 248,107.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,364.24 : 780,670.59 = 165,378.91 : x
  2. Step 2: Convert to fraction form
    520,364.24/780,670.59 = 165,378.91/x
  3. Step 3: Cross multiply
    520,364.24x = 780,670.59 × 165,378.91
  4. Step 4: Simplify right side
    520,364.24x = 129,106,447,339.90
  5. Step 5: Solve for x
    x = 129,106,447,339.90/520,364.24
  6. Step 6: Final answer
    x = 248,107.84

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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.