Home / 918,616.32-1,377,180.96-287,205.12

Finding the Fourth Proportional to 918,616.32, 1,377,180.96 and 287,205.12

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Solution

The fourth proportional to 918,616.32, 1,377,180.96 and 287,205.12 is: 430,575.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,616.32 : 1,377,180.96 = 287,205.12 : x
  2. Step 2: Convert to fraction form
    918,616.32/1,377,180.96 = 287,205.12/x
  3. Step 3: Cross multiply
    918,616.32x = 1,377,180.96 × 287,205.12
  4. Step 4: Simplify right side
    918,616.32x = 395,533,422,878.52
  5. Step 5: Solve for x
    x = 395,533,422,878.52/918,616.32
  6. Step 6: Final answer
    x = 430,575.22

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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.