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Finding the Fourth Proportional to 565,503.44, 780,400.36 and 307,381.56

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Solution

The fourth proportional to 565,503.44, 780,400.36 and 307,381.56 is: 424,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,503.44 : 780,400.36 = 307,381.56 : x
  2. Step 2: Convert to fraction form
    565,503.44/780,400.36 = 307,381.56/x
  3. Step 3: Cross multiply
    565,503.44x = 780,400.36 × 307,381.56
  4. Step 4: Simplify right side
    565,503.44x = 239,880,680,081.36
  5. Step 5: Solve for x
    x = 239,880,680,081.36/565,503.44
  6. Step 6: Final answer
    x = 424,189.60

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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.