Home / 1,209,541.11-1,669,104.48-665,728.53

Finding the Fourth Proportional to 1,209,541.11, 1,669,104.48 and 665,728.53

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Solution

The fourth proportional to 1,209,541.11, 1,669,104.48 and 665,728.53 is: 918,671.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,541.11 : 1,669,104.48 = 665,728.53 : x
  2. Step 2: Convert to fraction form
    1,209,541.11/1,669,104.48 = 665,728.53/x
  3. Step 3: Cross multiply
    1,209,541.11x = 1,669,104.48 × 665,728.53
  4. Step 4: Simplify right side
    1,209,541.11x = 1,111,170,471,886.81
  5. Step 5: Solve for x
    x = 1,111,170,471,886.81/1,209,541.11
  6. Step 6: Final answer
    x = 918,671.11

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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.