Home / 9,989,453.28-13,785,445.58-5,405,774.70

Finding the Fourth Proportional to 9,989,453.28, 13,785,445.58 and 5,405,774.70

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Solution

The fourth proportional to 9,989,453.28, 13,785,445.58 and 5,405,774.70 is: 7,459,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,453.28 : 13,785,445.58 = 5,405,774.70 : x
  2. Step 2: Convert to fraction form
    9,989,453.28/13,785,445.58 = 5,405,774.70/x
  3. Step 3: Cross multiply
    9,989,453.28x = 13,785,445.58 × 5,405,774.70
  4. Step 4: Simplify right side
    9,989,453.28x = 74,521,012,944,590.83
  5. Step 5: Solve for x
    x = 74,521,012,944,590.83/9,989,453.28
  6. Step 6: Final answer
    x = 7,459,969.12

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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.