Home / 742,684.84-1,024,618.08-420,321.04

Finding the Fourth Proportional to 742,684.84, 1,024,618.08 and 420,321.04

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Solution

The fourth proportional to 742,684.84, 1,024,618.08 and 420,321.04 is: 579,880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,684.84 : 1,024,618.08 = 420,321.04 : x
  2. Step 2: Convert to fraction form
    742,684.84/1,024,618.08 = 420,321.04/x
  3. Step 3: Cross multiply
    742,684.84x = 1,024,618.08 × 420,321.04
  4. Step 4: Simplify right side
    742,684.84x = 430,668,536,988.40
  5. Step 5: Solve for x
    x = 430,668,536,988.40/742,684.84
  6. Step 6: Final answer
    x = 579,880.61

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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.