Home / 742,605.72-1,024,620.27-420,315.83

Finding the Fourth Proportional to 742,605.72, 1,024,620.27 and 420,315.83

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Solution

The fourth proportional to 742,605.72, 1,024,620.27 and 420,315.83 is: 579,936.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,605.72 : 1,024,620.27 = 420,315.83 : x
  2. Step 2: Convert to fraction form
    742,605.72/1,024,620.27 = 420,315.83/x
  3. Step 3: Cross multiply
    742,605.72x = 1,024,620.27 × 420,315.83
  4. Step 4: Simplify right side
    742,605.72x = 430,664,116,362.91
  5. Step 5: Solve for x
    x = 430,664,116,362.91/742,605.72
  6. Step 6: Final answer
    x = 579,936.44

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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.