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Finding the Fourth Proportional to 573,457.28, 791,391.32 and 315,353.88

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Solution

The fourth proportional to 573,457.28, 791,391.32 and 315,353.88 is: 435,199.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,457.28 : 791,391.32 = 315,353.88 : x
  2. Step 2: Convert to fraction form
    573,457.28/791,391.32 = 315,353.88/x
  3. Step 3: Cross multiply
    573,457.28x = 791,391.32 × 315,353.88
  4. Step 4: Simplify right side
    573,457.28x = 249,568,323,360.32
  5. Step 5: Solve for x
    x = 249,568,323,360.32/573,457.28
  6. Step 6: Final answer
    x = 435,199.50

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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.