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Finding the Fourth Proportional to 641,932.80, 964,972.80 and 456,230.40

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Solution

The fourth proportional to 641,932.80, 964,972.80 and 456,230.40 is: 685,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,932.80 : 964,972.80 = 456,230.40 : x
  2. Step 2: Convert to fraction form
    641,932.80/964,972.80 = 456,230.40/x
  3. Step 3: Cross multiply
    641,932.80x = 964,972.80 × 456,230.40
  4. Step 4: Simplify right side
    641,932.80x = 440,249,926,533.12
  5. Step 5: Solve for x
    x = 440,249,926,533.12/641,932.80
  6. Step 6: Final answer
    x = 685,819.34

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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.