Home / 918,176.40-1,377,264.60-287,089.20

Finding the Fourth Proportional to 918,176.40, 1,377,264.60 and 287,089.20

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Solution

The fourth proportional to 918,176.40, 1,377,264.60 and 287,089.20 is: 430,633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,176.40 : 1,377,264.60 = 287,089.20 : x
  2. Step 2: Convert to fraction form
    918,176.40/1,377,264.60 = 287,089.20/x
  3. Step 3: Cross multiply
    918,176.40x = 1,377,264.60 × 287,089.20
  4. Step 4: Simplify right side
    918,176.40x = 395,397,792,202.32
  5. Step 5: Solve for x
    x = 395,397,792,202.32/918,176.40
  6. Step 6: Final answer
    x = 430,633.80

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Similar ratio
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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.