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Finding the Fourth Proportional to 573,638.52, 791,640.36 and 315,526.20

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Solution

The fourth proportional to 573,638.52, 791,640.36 and 315,526.20 is: 435,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,638.52 : 791,640.36 = 315,526.20 : x
  2. Step 2: Convert to fraction form
    573,638.52/791,640.36 = 315,526.20/x
  3. Step 3: Cross multiply
    573,638.52x = 791,640.36 × 315,526.20
  4. Step 4: Simplify right side
    573,638.52x = 249,783,274,557.43
  5. Step 5: Solve for x
    x = 249,783,274,557.43/573,638.52
  6. Step 6: Final answer
    x = 435,436.72

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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.