Home / 742,436-1,024,561.69-402,904.25

Finding the Fourth Proportional to 742,436, 1,024,561.69 and 402,904.25

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Solution

The fourth proportional to 742,436, 1,024,561.69 and 402,904.25 is: 556,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,436 : 1,024,561.69 = 402,904.25 : x
  2. Step 2: Convert to fraction form
    742,436/1,024,561.69 = 402,904.25/x
  3. Step 3: Cross multiply
    742,436x = 1,024,561.69 × 402,904.25
  4. Step 4: Simplify right side
    742,436x = 412,800,259,288.18
  5. Step 5: Solve for x
    x = 412,800,259,288.18/742,436
  6. Step 6: Final answer
    x = 556,007.87

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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.