Home / 831,719.98-1,147,774.80-449,746.78

Finding the Fourth Proportional to 831,719.98, 1,147,774.80 and 449,746.78

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Solution

The fourth proportional to 831,719.98, 1,147,774.80 and 449,746.78 is: 620,651.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,719.98 : 1,147,774.80 = 449,746.78 : x
  2. Step 2: Convert to fraction form
    831,719.98/1,147,774.80 = 449,746.78/x
  3. Step 3: Cross multiply
    831,719.98x = 1,147,774.80 × 449,746.78
  4. Step 4: Simplify right side
    831,719.98x = 516,208,020,465.14
  5. Step 5: Solve for x
    x = 516,208,020,465.14/831,719.98
  6. Step 6: Final answer
    x = 620,651.22

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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.