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Finding the Fourth Proportional to 432,886.80, 649,330.20 and 359,158.80

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Solution

The fourth proportional to 432,886.80, 649,330.20 and 359,158.80 is: 538,738.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,886.80 : 649,330.20 = 359,158.80 : x
  2. Step 2: Convert to fraction form
    432,886.80/649,330.20 = 359,158.80/x
  3. Step 3: Cross multiply
    432,886.80x = 649,330.20 × 359,158.80
  4. Step 4: Simplify right side
    432,886.80x = 233,212,655,435.76
  5. Step 5: Solve for x
    x = 233,212,655,435.76/432,886.80
  6. Step 6: Final answer
    x = 538,738.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.