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Finding the Fourth Proportional to 717,501.96, 989,955.72 and 499,466.34

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Solution

The fourth proportional to 717,501.96, 989,955.72 and 499,466.34 is: 689,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,501.96 : 989,955.72 = 499,466.34 : x
  2. Step 2: Convert to fraction form
    717,501.96/989,955.72 = 499,466.34/x
  3. Step 3: Cross multiply
    717,501.96x = 989,955.72 × 499,466.34
  4. Step 4: Simplify right side
    717,501.96x = 494,449,560,230.47
  5. Step 5: Solve for x
    x = 494,449,560,230.47/717,501.96
  6. Step 6: Final answer
    x = 689,126.42

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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.