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Finding the Fourth Proportional to 520,260.84, 779,788.86 and 239,188.20

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Solution

The fourth proportional to 520,260.84, 779,788.86 and 239,188.20 is: 358,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,260.84 : 779,788.86 = 239,188.20 : x
  2. Step 2: Convert to fraction form
    520,260.84/779,788.86 = 239,188.20/x
  3. Step 3: Cross multiply
    520,260.84x = 779,788.86 × 239,188.20
  4. Step 4: Simplify right side
    520,260.84x = 186,516,293,803.45
  5. Step 5: Solve for x
    x = 186,516,293,803.45/520,260.84
  6. Step 6: Final answer
    x = 358,505.35

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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.