Home / 528,169,817.40-792,289,718.10-139,987,231.80

Finding the Fourth Proportional to 528,169,817.40, 792,289,718.10 and 139,987,231.80

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Solution

The fourth proportional to 528,169,817.40, 792,289,718.10 and 139,987,231.80 is: 209,990,122.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,169,817.40 : 792,289,718.10 = 139,987,231.80 : x
  2. Step 2: Convert to fraction form
    528,169,817.40/792,289,718.10 = 139,987,231.80/x
  3. Step 3: Cross multiply
    528,169,817.40x = 792,289,718.10 × 139,987,231.80
  4. Step 4: Simplify right side
    528,169,817.40x = 110,910,444,420,421,376
  5. Step 5: Solve for x
    x = 110,910,444,420,421,376/528,169,817.40
  6. Step 6: Final answer
    x = 209,990,122.05

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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.