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Finding the Fourth Proportional to 464,518.80, 697,215.60 and 287,371.80

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Solution

The fourth proportional to 464,518.80, 697,215.60 and 287,371.80 is: 431,328.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,518.80 : 697,215.60 = 287,371.80 : x
  2. Step 2: Convert to fraction form
    464,518.80/697,215.60 = 287,371.80/x
  3. Step 3: Cross multiply
    464,518.80x = 697,215.60 × 287,371.80
  4. Step 4: Simplify right side
    464,518.80x = 200,360,101,960.08
  5. Step 5: Solve for x
    x = 200,360,101,960.08/464,518.80
  6. Step 6: Final answer
    x = 431,328.29

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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.