Home / 528,623,400.40-792,179,273.40-389,362,238.80

Finding the Fourth Proportional to 528,623,400.40, 792,179,273.40 and 389,362,238.80

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Solution

The fourth proportional to 528,623,400.40, 792,179,273.40 and 389,362,238.80 is: 583,486,646.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,623,400.40 : 792,179,273.40 = 389,362,238.80 : x
  2. Step 2: Convert to fraction form
    528,623,400.40/792,179,273.40 = 389,362,238.80/x
  3. Step 3: Cross multiply
    528,623,400.40x = 792,179,273.40 × 389,362,238.80
  4. Step 4: Simplify right side
    528,623,400.40x = 308,444,695,421,981,312
  5. Step 5: Solve for x
    x = 308,444,695,421,981,312/528,623,400.40
  6. Step 6: Final answer
    x = 583,486,646.99

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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.