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Finding the Fourth Proportional to 981,994.95, 1,472,994.23 and 308,128.01

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Solution

The fourth proportional to 981,994.95, 1,472,994.23 and 308,128.01 is: 462,192.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,994.95 : 1,472,994.23 = 308,128.01 : x
  2. Step 2: Convert to fraction form
    981,994.95/1,472,994.23 = 308,128.01/x
  3. Step 3: Cross multiply
    981,994.95x = 1,472,994.23 × 308,128.01
  4. Step 4: Simplify right side
    981,994.95x = 453,870,771,925.77
  5. Step 5: Solve for x
    x = 453,870,771,925.77/981,994.95
  6. Step 6: Final answer
    x = 462,192.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.