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Finding the Fourth Proportional to 520,091.70, 779,619.15 and 239,118.90

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Solution

The fourth proportional to 520,091.70, 779,619.15 and 239,118.90 is: 358,440.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,091.70 : 779,619.15 = 239,118.90 : x
  2. Step 2: Convert to fraction form
    520,091.70/779,619.15 = 239,118.90/x
  3. Step 3: Cross multiply
    520,091.70x = 779,619.15 × 239,118.90
  4. Step 4: Simplify right side
    520,091.70x = 186,421,673,566.94
  5. Step 5: Solve for x
    x = 186,421,673,566.94/520,091.70
  6. Step 6: Final answer
    x = 358,440.01

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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.