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Finding the Fourth Proportional to 1,671,977.70, 2,307,526.20 and 992,914.20

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Solution

The fourth proportional to 1,671,977.70, 2,307,526.20 and 992,914.20 is: 1,370,338.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,671,977.70 : 2,307,526.20 = 992,914.20 : x
  2. Step 2: Convert to fraction form
    1,671,977.70/2,307,526.20 = 992,914.20/x
  3. Step 3: Cross multiply
    1,671,977.70x = 2,307,526.20 × 992,914.20
  4. Step 4: Simplify right side
    1,671,977.70x = 2,291,175,530,852.04
  5. Step 5: Solve for x
    x = 2,291,175,530,852.04/1,671,977.70
  6. Step 6: Final answer
    x = 1,370,338.57

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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.