Home / 664,848,309.80-997,272,464.70-442,918,548.20

Finding the Fourth Proportional to 664,848,309.80, 997,272,464.70 and 442,918,548.20

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Solution

The fourth proportional to 664,848,309.80, 997,272,464.70 and 442,918,548.20 is: 664,377,822.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,848,309.80 : 997,272,464.70 = 442,918,548.20 : x
  2. Step 2: Convert to fraction form
    664,848,309.80/997,272,464.70 = 442,918,548.20/x
  3. Step 3: Cross multiply
    664,848,309.80x = 997,272,464.70 × 442,918,548.20
  4. Step 4: Simplify right side
    664,848,309.80x = 441,710,472,224,759,744
  5. Step 5: Solve for x
    x = 441,710,472,224,759,744/664,848,309.80
  6. Step 6: Final answer
    x = 664,377,822.30

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Double scale
Find fourth proportional to 664,848,310.80, 997,272,466.20 and 442,918,549.20
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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.