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Finding the Fourth Proportional to 618,488.61, 852,636.12 and 454,855.91

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Solution

The fourth proportional to 618,488.61, 852,636.12 and 454,855.91 is: 627,055.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,488.61 : 852,636.12 = 454,855.91 : x
  2. Step 2: Convert to fraction form
    618,488.61/852,636.12 = 454,855.91/x
  3. Step 3: Cross multiply
    618,488.61x = 852,636.12 × 454,855.91
  4. Step 4: Simplify right side
    618,488.61x = 387,826,574,851.14
  5. Step 5: Solve for x
    x = 387,826,574,851.14/618,488.61
  6. Step 6: Final answer
    x = 627,055.32

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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.