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Finding the Fourth Proportional to 666,694, 920,030.68 and 360,763.68

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Solution

The fourth proportional to 666,694, 920,030.68 and 360,763.68 is: 497,850.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,694 : 920,030.68 = 360,763.68 : x
  2. Step 2: Convert to fraction form
    666,694/920,030.68 = 360,763.68/x
  3. Step 3: Cross multiply
    666,694x = 920,030.68 × 360,763.68
  4. Step 4: Simplify right side
    666,694x = 331,913,653,829.70
  5. Step 5: Solve for x
    x = 331,913,653,829.70/666,694
  6. Step 6: Final answer
    x = 497,850.07

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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.