Home / 858,136.30-1,289,278.05-766,897.90

Finding the Fourth Proportional to 858,136.30, 1,289,278.05 and 766,897.90

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Solution

The fourth proportional to 858,136.30, 1,289,278.05 and 766,897.90 is: 1,152,199.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,136.30 : 1,289,278.05 = 766,897.90 : x
  2. Step 2: Convert to fraction form
    858,136.30/1,289,278.05 = 766,897.90/x
  3. Step 3: Cross multiply
    858,136.30x = 1,289,278.05 × 766,897.90
  4. Step 4: Simplify right side
    858,136.30x = 988,744,629,061.10
  5. Step 5: Solve for x
    x = 988,744,629,061.10/858,136.30
  6. Step 6: Final answer
    x = 1,152,199.98

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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.