Home / 913,739.16-1,258,143.60-811,587.12

Finding the Fourth Proportional to 913,739.16, 1,258,143.60 and 811,587.12

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Solution

The fourth proportional to 913,739.16, 1,258,143.60 and 811,587.12 is: 1,117,488.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,739.16 : 1,258,143.60 = 811,587.12 : x
  2. Step 2: Convert to fraction form
    913,739.16/1,258,143.60 = 811,587.12/x
  3. Step 3: Cross multiply
    913,739.16x = 1,258,143.60 × 811,587.12
  4. Step 4: Simplify right side
    913,739.16x = 1,021,093,140,870.43
  5. Step 5: Solve for x
    x = 1,021,093,140,870.43/913,739.16
  6. Step 6: Final answer
    x = 1,117,488.65

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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.