Home / 742,465.85-1,024,618.21-420,175.89

Finding the Fourth Proportional to 742,465.85, 1,024,618.21 and 420,175.89

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Solution

The fourth proportional to 742,465.85, 1,024,618.21 and 420,175.89 is: 579,851.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,465.85 : 1,024,618.21 = 420,175.89 : x
  2. Step 2: Convert to fraction form
    742,465.85/1,024,618.21 = 420,175.89/x
  3. Step 3: Cross multiply
    742,465.85x = 1,024,618.21 × 420,175.89
  4. Step 4: Simplify right side
    742,465.85x = 430,519,867,246.52
  5. Step 5: Solve for x
    x = 430,519,867,246.52/742,465.85
  6. Step 6: Final answer
    x = 579,851.41

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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.