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Finding the Fourth Proportional to 563,401.53, 777,500.25 and 308,747.25

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Solution

The fourth proportional to 563,401.53, 777,500.25 and 308,747.25 is: 426,074.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,401.53 : 777,500.25 = 308,747.25 : x
  2. Step 2: Convert to fraction form
    563,401.53/777,500.25 = 308,747.25/x
  3. Step 3: Cross multiply
    563,401.53x = 777,500.25 × 308,747.25
  4. Step 4: Simplify right side
    563,401.53x = 240,051,064,061.81
  5. Step 5: Solve for x
    x = 240,051,064,061.81/563,401.53
  6. Step 6: Final answer
    x = 426,074.57

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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.