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Finding the Fourth Proportional to 437,554.80, 656,332.20 and 418,892.40

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Solution

The fourth proportional to 437,554.80, 656,332.20 and 418,892.40 is: 628,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,554.80 : 656,332.20 = 418,892.40 : x
  2. Step 2: Convert to fraction form
    437,554.80/656,332.20 = 418,892.40/x
  3. Step 3: Cross multiply
    437,554.80x = 656,332.20 × 418,892.40
  4. Step 4: Simplify right side
    437,554.80x = 274,932,570,455.28
  5. Step 5: Solve for x
    x = 274,932,570,455.28/437,554.80
  6. Step 6: Final answer
    x = 628,338.60

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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.