Home / 464,821.20-697,231.80-287,528.40

Finding the Fourth Proportional to 464,821.20, 697,231.80 and 287,528.40

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Solution

The fourth proportional to 464,821.20, 697,231.80 and 287,528.40 is: 431,292.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,821.20 : 697,231.80 = 287,528.40 : x
  2. Step 2: Convert to fraction form
    464,821.20/697,231.80 = 287,528.40/x
  3. Step 3: Cross multiply
    464,821.20x = 697,231.80 × 287,528.40
  4. Step 4: Simplify right side
    464,821.20x = 200,473,943,883.12
  5. Step 5: Solve for x
    x = 200,473,943,883.12/464,821.20
  6. Step 6: Final answer
    x = 431,292.60

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Similar ratio
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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.