Home / 776,098.20-1,165,475.70-421,804.20

Finding the Fourth Proportional to 776,098.20, 1,165,475.70 and 421,804.20

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Solution

The fourth proportional to 776,098.20, 1,165,475.70 and 421,804.20 is: 633,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,098.20 : 1,165,475.70 = 421,804.20 : x
  2. Step 2: Convert to fraction form
    776,098.20/1,165,475.70 = 421,804.20/x
  3. Step 3: Cross multiply
    776,098.20x = 1,165,475.70 × 421,804.20
  4. Step 4: Simplify right side
    776,098.20x = 491,602,545,257.94
  5. Step 5: Solve for x
    x = 491,602,545,257.94/776,098.20
  6. Step 6: Final answer
    x = 633,428.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.