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Finding the Fourth Proportional to 561,630.15, 775,050 and 306,981.36

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Solution

The fourth proportional to 561,630.15, 775,050 and 306,981.36 is: 423,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,630.15 : 775,050 = 306,981.36 : x
  2. Step 2: Convert to fraction form
    561,630.15/775,050 = 306,981.36/x
  3. Step 3: Cross multiply
    561,630.15x = 775,050 × 306,981.36
  4. Step 4: Simplify right side
    561,630.15x = 237,925,903,068
  5. Step 5: Solve for x
    x = 237,925,903,068/561,630.15
  6. Step 6: Final answer
    x = 423,634.49

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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.