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Finding the Fourth Proportional to 520,261.69, 780,392.84 and 146,284.69

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Solution

The fourth proportional to 520,261.69, 780,392.84 and 146,284.69 is: 219,427.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,261.69 : 780,392.84 = 146,284.69 : x
  2. Step 2: Convert to fraction form
    520,261.69/780,392.84 = 146,284.69/x
  3. Step 3: Cross multiply
    520,261.69x = 780,392.84 × 146,284.69
  4. Step 4: Simplify right side
    520,261.69x = 114,159,521,995.21
  5. Step 5: Solve for x
    x = 114,159,521,995.21/520,261.69
  6. Step 6: Final answer
    x = 219,427.12

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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.