Home / 786,603.80-1,180,155.54-331,435.64

Finding the Fourth Proportional to 786,603.80, 1,180,155.54 and 331,435.64

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Solution

The fourth proportional to 786,603.80, 1,180,155.54 and 331,435.64 is: 497,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,603.80 : 1,180,155.54 = 331,435.64 : x
  2. Step 2: Convert to fraction form
    786,603.80/1,180,155.54 = 331,435.64/x
  3. Step 3: Cross multiply
    786,603.80x = 1,180,155.54 × 331,435.64
  4. Step 4: Simplify right side
    786,603.80x = 391,145,606,699.45
  5. Step 5: Solve for x
    x = 391,145,606,699.45/786,603.80
  6. Step 6: Final answer
    x = 497,258.73

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1.5x scale

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.