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Finding the Fourth Proportional to 520,296.64, 780,445.16 and 146,319.64

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Solution

The fourth proportional to 520,296.64, 780,445.16 and 146,319.64 is: 219,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,296.64 : 780,445.16 = 146,319.64 : x
  2. Step 2: Convert to fraction form
    520,296.64/780,445.16 = 146,319.64/x
  3. Step 3: Cross multiply
    520,296.64x = 780,445.16 × 146,319.64
  4. Step 4: Simplify right side
    520,296.64x = 114,194,454,850.94
  5. Step 5: Solve for x
    x = 114,194,454,850.94/520,296.64
  6. Step 6: Final answer
    x = 219,479.52

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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.