Home / 743,557.68-1,113,839.64-343,647.72

Finding the Fourth Proportional to 743,557.68, 1,113,839.64 and 343,647.72

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Solution

The fourth proportional to 743,557.68, 1,113,839.64 and 343,647.72 is: 514,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,557.68 : 1,113,839.64 = 343,647.72 : x
  2. Step 2: Convert to fraction form
    743,557.68/1,113,839.64 = 343,647.72/x
  3. Step 3: Cross multiply
    743,557.68x = 1,113,839.64 × 343,647.72
  4. Step 4: Simplify right side
    743,557.68x = 382,768,452,731.62
  5. Step 5: Solve for x
    x = 382,768,452,731.62/743,557.68
  6. Step 6: Final answer
    x = 514,779.77

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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.