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Finding the Fourth Proportional to 722,549.63, 997,126.88 and 395,871.50

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Solution

The fourth proportional to 722,549.63, 997,126.88 and 395,871.50 is: 546,307.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,549.63 : 997,126.88 = 395,871.50 : x
  2. Step 2: Convert to fraction form
    722,549.63/997,126.88 = 395,871.50/x
  3. Step 3: Cross multiply
    722,549.63x = 997,126.88 × 395,871.50
  4. Step 4: Simplify right side
    722,549.63x = 394,734,114,189.38
  5. Step 5: Solve for x
    x = 394,734,114,189.38/722,549.63
  6. Step 6: Final answer
    x = 546,307.27

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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.