Home / 664,848,000.80-997,272,001.20-389,348,986.40

Finding the Fourth Proportional to 664,848,000.80, 997,272,001.20 and 389,348,986.40

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Solution

The fourth proportional to 664,848,000.80, 997,272,001.20 and 389,348,986.40 is: 584,023,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,848,000.80 : 997,272,001.20 = 389,348,986.40 : x
  2. Step 2: Convert to fraction form
    664,848,000.80/997,272,001.20 = 389,348,986.40/x
  3. Step 3: Cross multiply
    664,848,000.80x = 997,272,001.20 × 389,348,986.40
  4. Step 4: Simplify right side
    664,848,000.80x = 388,286,842,832,319,552
  5. Step 5: Solve for x
    x = 388,286,842,832,319,552/664,848,000.80
  6. Step 6: Final answer
    x = 584,023,479.60

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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.