Home / 664,850,947.80-997,276,421.70-389,351,933.40

Finding the Fourth Proportional to 664,850,947.80, 997,276,421.70 and 389,351,933.40

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Solution

The fourth proportional to 664,850,947.80, 997,276,421.70 and 389,351,933.40 is: 584,027,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,850,947.80 : 997,276,421.70 = 389,351,933.40 : x
  2. Step 2: Convert to fraction form
    664,850,947.80/997,276,421.70 = 389,351,933.40/x
  3. Step 3: Cross multiply
    664,850,947.80x = 997,276,421.70 × 389,351,933.40
  4. Step 4: Simplify right side
    664,850,947.80x = 388,291,502,923,128,704
  5. Step 5: Solve for x
    x = 388,291,502,923,128,704/664,850,947.80
  6. Step 6: Final answer
    x = 584,027,900.10

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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.