Home / 989,408.19-1,365,406.42-553,814.71

Finding the Fourth Proportional to 989,408.19, 1,365,406.42 and 553,814.71

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Solution

The fourth proportional to 989,408.19, 1,365,406.42 and 553,814.71 is: 764,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,408.19 : 1,365,406.42 = 553,814.71 : x
  2. Step 2: Convert to fraction form
    989,408.19/1,365,406.42 = 553,814.71/x
  3. Step 3: Cross multiply
    989,408.19x = 1,365,406.42 × 553,814.71
  4. Step 4: Simplify right side
    989,408.19x = 756,182,154,844.67
  5. Step 5: Solve for x
    x = 756,182,154,844.67/989,408.19
  6. Step 6: Final answer
    x = 764,277.23

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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.