Home / 648,936.20-973,404.30-424,987.40

Finding the Fourth Proportional to 648,936.20, 973,404.30 and 424,987.40

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Solution

The fourth proportional to 648,936.20, 973,404.30 and 424,987.40 is: 637,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,936.20 : 973,404.30 = 424,987.40 : x
  2. Step 2: Convert to fraction form
    648,936.20/973,404.30 = 424,987.40/x
  3. Step 3: Cross multiply
    648,936.20x = 973,404.30 × 424,987.40
  4. Step 4: Simplify right side
    648,936.20x = 413,684,562,605.82
  5. Step 5: Solve for x
    x = 413,684,562,605.82/648,936.20
  6. Step 6: Final answer
    x = 637,481.10

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Half scale
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Double scale
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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.