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Finding the Fourth Proportional to 508,085.46, 701,119.80 and 278,605.98

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Solution

The fourth proportional to 508,085.46, 701,119.80 and 278,605.98 is: 384,455.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,085.46 : 701,119.80 = 278,605.98 : x
  2. Step 2: Convert to fraction form
    508,085.46/701,119.80 = 278,605.98/x
  3. Step 3: Cross multiply
    508,085.46x = 701,119.80 × 278,605.98
  4. Step 4: Simplify right side
    508,085.46x = 195,336,168,976.40
  5. Step 5: Solve for x
    x = 195,336,168,976.40/508,085.46
  6. Step 6: Final answer
    x = 384,455.34

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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.