Home / 563,405.15-777,499.79-305,281.91

Finding the Fourth Proportional to 563,405.15, 777,499.79 and 305,281.91

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Solution

The fourth proportional to 563,405.15, 777,499.79 and 305,281.91 is: 421,289.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,405.15 : 777,499.79 = 305,281.91 : x
  2. Step 2: Convert to fraction form
    563,405.15/777,499.79 = 305,281.91/x
  3. Step 3: Cross multiply
    563,405.15x = 777,499.79 × 305,281.91
  4. Step 4: Simplify right side
    563,405.15x = 237,356,620,915.80
  5. Step 5: Solve for x
    x = 237,356,620,915.80/563,405.15
  6. Step 6: Final answer
    x = 421,289.41

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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.