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Finding the Fourth Proportional to 573,120.89, 790,915.03 and 315,021.71

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Solution

The fourth proportional to 573,120.89, 790,915.03 and 315,021.71 is: 434,734.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,120.89 : 790,915.03 = 315,021.71 : x
  2. Step 2: Convert to fraction form
    573,120.89/790,915.03 = 315,021.71/x
  3. Step 3: Cross multiply
    573,120.89x = 790,915.03 × 315,021.71
  4. Step 4: Simplify right side
    573,120.89x = 249,155,403,728.14
  5. Step 5: Solve for x
    x = 249,155,403,728.14/573,120.89
  6. Step 6: Final answer
    x = 434,734.46

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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.