Home / 789,889.11-1,090,043.69-427,312.11

Finding the Fourth Proportional to 789,889.11, 1,090,043.69 and 427,312.11

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Solution

The fourth proportional to 789,889.11, 1,090,043.69 and 427,312.11 is: 589,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,889.11 : 1,090,043.69 = 427,312.11 : x
  2. Step 2: Convert to fraction form
    789,889.11/1,090,043.69 = 427,312.11/x
  3. Step 3: Cross multiply
    789,889.11x = 1,090,043.69 × 427,312.11
  4. Step 4: Simplify right side
    789,889.11x = 465,788,869,166.09
  5. Step 5: Solve for x
    x = 465,788,869,166.09/789,889.11
  6. Step 6: Final answer
    x = 589,688.94

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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.