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Finding the Fourth Proportional to 520,262.84, 779,791.86 and 239,190.20

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Solution

The fourth proportional to 520,262.84, 779,791.86 and 239,190.20 is: 358,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,262.84 : 779,791.86 = 239,190.20 : x
  2. Step 2: Convert to fraction form
    520,262.84/779,791.86 = 239,190.20/x
  3. Step 3: Cross multiply
    520,262.84x = 779,791.86 × 239,190.20
  4. Step 4: Simplify right side
    520,262.84x = 186,518,570,951.77
  5. Step 5: Solve for x
    x = 186,518,570,951.77/520,262.84
  6. Step 6: Final answer
    x = 358,508.35

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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.