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Finding the Fourth Proportional to 922,118.70, 1,384,214.85 and 712,685.10

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Solution

The fourth proportional to 922,118.70, 1,384,214.85 and 712,685.10 is: 1,069,828.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,118.70 : 1,384,214.85 = 712,685.10 : x
  2. Step 2: Convert to fraction form
    922,118.70/1,384,214.85 = 712,685.10/x
  3. Step 3: Cross multiply
    922,118.70x = 1,384,214.85 × 712,685.10
  4. Step 4: Simplify right side
    922,118.70x = 986,509,298,793.74
  5. Step 5: Solve for x
    x = 986,509,298,793.74/922,118.70
  6. Step 6: Final answer
    x = 1,069,828.97

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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.