Home / 519,840,136.80-779,760,205.20-213,030,280.80

Finding the Fourth Proportional to 519,840,136.80, 779,760,205.20 and 213,030,280.80

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Solution

The fourth proportional to 519,840,136.80, 779,760,205.20 and 213,030,280.80 is: 319,545,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,840,136.80 : 779,760,205.20 = 213,030,280.80 : x
  2. Step 2: Convert to fraction form
    519,840,136.80/779,760,205.20 = 213,030,280.80/x
  3. Step 3: Cross multiply
    519,840,136.80x = 779,760,205.20 × 213,030,280.80
  4. Step 4: Simplify right side
    519,840,136.80x = 166,112,535,470,421,632
  5. Step 5: Solve for x
    x = 166,112,535,470,421,632/519,840,136.80
  6. Step 6: Final answer
    x = 319,545,421.20

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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.