Home / 1,224,439.80-1,688,103.64-1,005,827.28

Finding the Fourth Proportional to 1,224,439.80, 1,688,103.64 and 1,005,827.28

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Solution

The fourth proportional to 1,224,439.80, 1,688,103.64 and 1,005,827.28 is: 1,386,708.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,439.80 : 1,688,103.64 = 1,005,827.28 : x
  2. Step 2: Convert to fraction form
    1,224,439.80/1,688,103.64 = 1,005,827.28/x
  3. Step 3: Cross multiply
    1,224,439.80x = 1,688,103.64 × 1,005,827.28
  4. Step 4: Simplify right side
    1,224,439.80x = 1,697,940,692,579.30
  5. Step 5: Solve for x
    x = 1,697,940,692,579.30/1,224,439.80
  6. Step 6: Final answer
    x = 1,386,708.18

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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.