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Finding the Fourth Proportional to 565,217.39, 779,999.76 and 310,584.98

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Solution

The fourth proportional to 565,217.39, 779,999.76 and 310,584.98 is: 428,607.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,217.39 : 779,999.76 = 310,584.98 : x
  2. Step 2: Convert to fraction form
    565,217.39/779,999.76 = 310,584.98/x
  3. Step 3: Cross multiply
    565,217.39x = 779,999.76 × 310,584.98
  4. Step 4: Simplify right side
    565,217.39x = 242,256,211,809.60
  5. Step 5: Solve for x
    x = 242,256,211,809.60/565,217.39
  6. Step 6: Final answer
    x = 428,607.14

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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.