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Finding the Fourth Proportional to 719,988.13, 993,453.78 and 465,191.74

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Solution

The fourth proportional to 719,988.13, 993,453.78 and 465,191.74 is: 641,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,988.13 : 993,453.78 = 465,191.74 : x
  2. Step 2: Convert to fraction form
    719,988.13/993,453.78 = 465,191.74/x
  3. Step 3: Cross multiply
    719,988.13x = 993,453.78 × 465,191.74
  4. Step 4: Simplify right side
    719,988.13x = 462,146,492,527.78
  5. Step 5: Solve for x
    x = 462,146,492,527.78/719,988.13
  6. Step 6: Final answer
    x = 641,880.71

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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.