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Finding the Fourth Proportional to 560,917.74, 773,981.04 and 315,889.61

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Solution

The fourth proportional to 560,917.74, 773,981.04 and 315,889.61 is: 435,879.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,917.74 : 773,981.04 = 315,889.61 : x
  2. Step 2: Convert to fraction form
    560,917.74/773,981.04 = 315,889.61/x
  3. Step 3: Cross multiply
    560,917.74x = 773,981.04 × 315,889.61
  4. Step 4: Simplify right side
    560,917.74x = 244,492,565,003.09
  5. Step 5: Solve for x
    x = 244,492,565,003.09/560,917.74
  6. Step 6: Final answer
    x = 435,879.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.