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Finding the Fourth Proportional to 669,055.04, 922,875.98 and 396,930.28

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Solution

The fourth proportional to 669,055.04, 922,875.98 and 396,930.28 is: 547,514.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,055.04 : 922,875.98 = 396,930.28 : x
  2. Step 2: Convert to fraction form
    669,055.04/922,875.98 = 396,930.28/x
  3. Step 3: Cross multiply
    669,055.04x = 922,875.98 × 396,930.28
  4. Step 4: Simplify right side
    669,055.04x = 366,317,421,146.67
  5. Step 5: Solve for x
    x = 366,317,421,146.67/669,055.04
  6. Step 6: Final answer
    x = 547,514.63

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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.