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Finding the Fourth Proportional to 649,532.39, 896,326.43 and 355,176.68

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Solution

The fourth proportional to 649,532.39, 896,326.43 and 355,176.68 is: 490,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,532.39 : 896,326.43 = 355,176.68 : x
  2. Step 2: Convert to fraction form
    649,532.39/896,326.43 = 355,176.68/x
  3. Step 3: Cross multiply
    649,532.39x = 896,326.43 × 355,176.68
  4. Step 4: Simplify right side
    649,532.39x = 318,354,239,346.14
  5. Step 5: Solve for x
    x = 318,354,239,346.14/649,532.39
  6. Step 6: Final answer
    x = 490,128.35

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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.