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Finding the Fourth Proportional to 647,981.03, 894,206.06 and 357,594.81

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Solution

The fourth proportional to 647,981.03, 894,206.06 and 357,594.81 is: 493,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,981.03 : 894,206.06 = 357,594.81 : x
  2. Step 2: Convert to fraction form
    647,981.03/894,206.06 = 357,594.81/x
  3. Step 3: Cross multiply
    647,981.03x = 894,206.06 × 357,594.81
  4. Step 4: Simplify right side
    647,981.03x = 319,763,444,338.58
  5. Step 5: Solve for x
    x = 319,763,444,338.58/647,981.03
  6. Step 6: Final answer
    x = 493,476.56

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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.