Home / 789,888.98-1,090,044.42-427,312.76

Finding the Fourth Proportional to 789,888.98, 1,090,044.42 and 427,312.76

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Solution

The fourth proportional to 789,888.98, 1,090,044.42 and 427,312.76 is: 589,690.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,888.98 : 1,090,044.42 = 427,312.76 : x
  2. Step 2: Convert to fraction form
    789,888.98/1,090,044.42 = 427,312.76/x
  3. Step 3: Cross multiply
    789,888.98x = 1,090,044.42 × 427,312.76
  4. Step 4: Simplify right side
    789,888.98x = 465,789,889,632.80
  5. Step 5: Solve for x
    x = 465,789,889,632.80/789,888.98
  6. Step 6: Final answer
    x = 589,690.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.