Home / 742,400.38-1,024,515.21-402,868.54

Finding the Fourth Proportional to 742,400.38, 1,024,515.21 and 402,868.54

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Solution

The fourth proportional to 742,400.38, 1,024,515.21 and 402,868.54 is: 555,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,400.38 : 1,024,515.21 = 402,868.54 : x
  2. Step 2: Convert to fraction form
    742,400.38/1,024,515.21 = 402,868.54/x
  3. Step 3: Cross multiply
    742,400.38x = 1,024,515.21 × 402,868.54
  4. Step 4: Simplify right side
    742,400.38x = 412,744,946,860.49
  5. Step 5: Solve for x
    x = 412,744,946,860.49/742,400.38
  6. Step 6: Final answer
    x = 555,960.04

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Double scale
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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.