Home / 1,295,776.60-1,942,790.10-688,665.40

Finding the Fourth Proportional to 1,295,776.60, 1,942,790.10 and 688,665.40

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Solution

The fourth proportional to 1,295,776.60, 1,942,790.10 and 688,665.40 is: 1,032,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,776.60 : 1,942,790.10 = 688,665.40 : x
  2. Step 2: Convert to fraction form
    1,295,776.60/1,942,790.10 = 688,665.40/x
  3. Step 3: Cross multiply
    1,295,776.60x = 1,942,790.10 × 688,665.40
  4. Step 4: Simplify right side
    1,295,776.60x = 1,337,932,321,332.54
  5. Step 5: Solve for x
    x = 1,337,932,321,332.54/1,295,776.60
  6. Step 6: Final answer
    x = 1,032,533.17

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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.