Home / 1,281,155.76-1,768,005.54-708,205.50

Finding the Fourth Proportional to 1,281,155.76, 1,768,005.54 and 708,205.50

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Solution

The fourth proportional to 1,281,155.76, 1,768,005.54 and 708,205.50 is: 977,329.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,155.76 : 1,768,005.54 = 708,205.50 : x
  2. Step 2: Convert to fraction form
    1,281,155.76/1,768,005.54 = 708,205.50/x
  3. Step 3: Cross multiply
    1,281,155.76x = 1,768,005.54 × 708,205.50
  4. Step 4: Simplify right side
    1,281,155.76x = 1,252,111,247,458.47
  5. Step 5: Solve for x
    x = 1,252,111,247,458.47/1,281,155.76
  6. Step 6: Final answer
    x = 977,329.44

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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.