Home / 1,069,155.12-1,475,433.81-639,435.27

Finding the Fourth Proportional to 1,069,155.12, 1,475,433.81 and 639,435.27

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Solution

The fourth proportional to 1,069,155.12, 1,475,433.81 and 639,435.27 is: 882,420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,155.12 : 1,475,433.81 = 639,435.27 : x
  2. Step 2: Convert to fraction form
    1,069,155.12/1,475,433.81 = 639,435.27/x
  3. Step 3: Cross multiply
    1,069,155.12x = 1,475,433.81 × 639,435.27
  4. Step 4: Simplify right side
    1,069,155.12x = 943,444,416,664.48
  5. Step 5: Solve for x
    x = 943,444,416,664.48/1,069,155.12
  6. Step 6: Final answer
    x = 882,420.52

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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.