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Finding the Fourth Proportional to 514,550.60, 709,853.46 and 310,487.80

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Solution

The fourth proportional to 514,550.60, 709,853.46 and 310,487.80 is: 428,336.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,550.60 : 709,853.46 = 310,487.80 : x
  2. Step 2: Convert to fraction form
    514,550.60/709,853.46 = 310,487.80/x
  3. Step 3: Cross multiply
    514,550.60x = 709,853.46 × 310,487.80
  4. Step 4: Simplify right side
    514,550.60x = 220,400,839,117.79
  5. Step 5: Solve for x
    x = 220,400,839,117.79/514,550.60
  6. Step 6: Final answer
    x = 428,336.57

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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.