Home / 1,140,939.72-1,711,386.54-392,969.16

Finding the Fourth Proportional to 1,140,939.72, 1,711,386.54 and 392,969.16

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Solution

The fourth proportional to 1,140,939.72, 1,711,386.54 and 392,969.16 is: 589,445.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,140,939.72 : 1,711,386.54 = 392,969.16 : x
  2. Step 2: Convert to fraction form
    1,140,939.72/1,711,386.54 = 392,969.16/x
  3. Step 3: Cross multiply
    1,140,939.72x = 1,711,386.54 × 392,969.16
  4. Step 4: Simplify right side
    1,140,939.72x = 672,522,131,059.11
  5. Step 5: Solve for x
    x = 672,522,131,059.11/1,140,939.72
  6. Step 6: Final answer
    x = 589,445.80

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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.