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Finding the Fourth Proportional to 664,985.20, 997,477.80 and 465,530.80

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Solution

The fourth proportional to 664,985.20, 997,477.80 and 465,530.80 is: 698,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,985.20 : 997,477.80 = 465,530.80 : x
  2. Step 2: Convert to fraction form
    664,985.20/997,477.80 = 465,530.80/x
  3. Step 3: Cross multiply
    664,985.20x = 997,477.80 × 465,530.80
  4. Step 4: Simplify right side
    664,985.20x = 464,356,638,216.24
  5. Step 5: Solve for x
    x = 464,356,638,216.24/664,985.20
  6. Step 6: Final answer
    x = 698,296.20

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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.