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Finding the Fourth Proportional to 424,298.26, 632,450.38 and 390,247.62

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Solution

The fourth proportional to 424,298.26, 632,450.38 and 390,247.62 is: 581,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,298.26 : 632,450.38 = 390,247.62 : x
  2. Step 2: Convert to fraction form
    424,298.26/632,450.38 = 390,247.62/x
  3. Step 3: Cross multiply
    424,298.26x = 632,450.38 × 390,247.62
  4. Step 4: Simplify right side
    424,298.26x = 246,812,255,563.10
  5. Step 5: Solve for x
    x = 246,812,255,563.10/424,298.26
  6. Step 6: Final answer
    x = 581,695.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.