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Finding the Fourth Proportional to 922,908.20, 1,384,362.30 and 686,712.20

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Solution

The fourth proportional to 922,908.20, 1,384,362.30 and 686,712.20 is: 1,030,068.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,908.20 : 1,384,362.30 = 686,712.20 : x
  2. Step 2: Convert to fraction form
    922,908.20/1,384,362.30 = 686,712.20/x
  3. Step 3: Cross multiply
    922,908.20x = 1,384,362.30 × 686,712.20
  4. Step 4: Simplify right side
    922,908.20x = 950,658,480,630.06
  5. Step 5: Solve for x
    x = 950,658,480,630.06/922,908.20
  6. Step 6: Final answer
    x = 1,030,068.30

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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.