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Finding the Fourth Proportional to 1,224,139.80, 1,836,209.70 and 925,541.40

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Solution

The fourth proportional to 1,224,139.80, 1,836,209.70 and 925,541.40 is: 1,388,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,139.80 : 1,836,209.70 = 925,541.40 : x
  2. Step 2: Convert to fraction form
    1,224,139.80/1,836,209.70 = 925,541.40/x
  3. Step 3: Cross multiply
    1,224,139.80x = 1,836,209.70 × 925,541.40
  4. Step 4: Simplify right side
    1,224,139.80x = 1,699,488,096,431.58
  5. Step 5: Solve for x
    x = 1,699,488,096,431.58/1,224,139.80
  6. Step 6: Final answer
    x = 1,388,312.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.