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Finding the Fourth Proportional to 1,384,369, 1,910,429.22 and 748,465

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Solution

The fourth proportional to 1,384,369, 1,910,429.22 and 748,465 is: 1,032,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384,369 : 1,910,429.22 = 748,465 : x
  2. Step 2: Convert to fraction form
    1,384,369/1,910,429.22 = 748,465/x
  3. Step 3: Cross multiply
    1,384,369x = 1,910,429.22 × 748,465
  4. Step 4: Simplify right side
    1,384,369x = 1,429,889,406,147.30
  5. Step 5: Solve for x
    x = 1,429,889,406,147.30/1,384,369
  6. Step 6: Final answer
    x = 1,032,881.70

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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.