Home / 9,989,455.17-13,785,448.16-5,405,776.55

Finding the Fourth Proportional to 9,989,455.17, 13,785,448.16 and 5,405,776.55

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Solution

The fourth proportional to 9,989,455.17, 13,785,448.16 and 5,405,776.55 is: 7,459,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989,455.17 : 13,785,448.16 = 5,405,776.55 : x
  2. Step 2: Convert to fraction form
    9,989,455.17/13,785,448.16 = 5,405,776.55/x
  3. Step 3: Cross multiply
    9,989,455.17x = 13,785,448.16 × 5,405,776.55
  4. Step 4: Simplify right side
    9,989,455.17x = 74,521,052,339,155.84
  5. Step 5: Solve for x
    x = 74,521,052,339,155.84/9,989,455.17
  6. Step 6: Final answer
    x = 7,459,971.65

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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.