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Finding the Fourth Proportional to 1,174,431, 1,620,716.40 and 637,887

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Solution

The fourth proportional to 1,174,431, 1,620,716.40 and 637,887 is: 880,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,431 : 1,620,716.40 = 637,887 : x
  2. Step 2: Convert to fraction form
    1,174,431/1,620,716.40 = 637,887/x
  3. Step 3: Cross multiply
    1,174,431x = 1,620,716.40 × 637,887
  4. Step 4: Simplify right side
    1,174,431x = 1,033,833,922,246.80
  5. Step 5: Solve for x
    x = 1,033,833,922,246.80/1,174,431
  6. Step 6: Final answer
    x = 880,284.94

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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.