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Finding the Fourth Proportional to 869,402.10, 1,303,495.65 and 514,233.30

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Solution

The fourth proportional to 869,402.10, 1,303,495.65 and 514,233.30 is: 770,990.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,402.10 : 1,303,495.65 = 514,233.30 : x
  2. Step 2: Convert to fraction form
    869,402.10/1,303,495.65 = 514,233.30/x
  3. Step 3: Cross multiply
    869,402.10x = 1,303,495.65 × 514,233.30
  4. Step 4: Simplify right side
    869,402.10x = 670,300,869,635.15
  5. Step 5: Solve for x
    x = 670,300,869,635.15/869,402.10
  6. Step 6: Final answer
    x = 770,990.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.