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Finding the Fourth Proportional to 560,489.54, 840,710.78 and 260,867.06

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Solution

The fourth proportional to 560,489.54, 840,710.78 and 260,867.06 is: 391,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,489.54 : 840,710.78 = 260,867.06 : x
  2. Step 2: Convert to fraction form
    560,489.54/840,710.78 = 260,867.06/x
  3. Step 3: Cross multiply
    560,489.54x = 840,710.78 × 260,867.06
  4. Step 4: Simplify right side
    560,489.54x = 219,313,743,981.02
  5. Step 5: Solve for x
    x = 219,313,743,981.02/560,489.54
  6. Step 6: Final answer
    x = 391,289.63

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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.