Home / 1,398,165.08-1,929,449.48-786,317.67

Finding the Fourth Proportional to 1,398,165.08, 1,929,449.48 and 786,317.67

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Solution

The fourth proportional to 1,398,165.08, 1,929,449.48 and 786,317.67 is: 1,085,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,165.08 : 1,929,449.48 = 786,317.67 : x
  2. Step 2: Convert to fraction form
    1,398,165.08/1,929,449.48 = 786,317.67/x
  3. Step 3: Cross multiply
    1,398,165.08x = 1,929,449.48 × 786,317.67
  4. Step 4: Simplify right side
    1,398,165.08x = 1,517,160,215,564.72
  5. Step 5: Solve for x
    x = 1,517,160,215,564.72/1,398,165.08
  6. Step 6: Final answer
    x = 1,085,108.08

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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.