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Finding the Fourth Proportional to 1,329,307.05, 1,834,434.40 and 725,695.05

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Solution

The fourth proportional to 1,329,307.05, 1,834,434.40 and 725,695.05 is: 1,001,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,307.05 : 1,834,434.40 = 725,695.05 : x
  2. Step 2: Convert to fraction form
    1,329,307.05/1,834,434.40 = 725,695.05/x
  3. Step 3: Cross multiply
    1,329,307.05x = 1,834,434.40 × 725,695.05
  4. Step 4: Simplify right side
    1,329,307.05x = 1,331,239,963,629.72
  5. Step 5: Solve for x
    x = 1,331,239,963,629.72/1,329,307.05
  6. Step 6: Final answer
    x = 1,001,454.08

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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.