Home / 918,124.80-1,377,187.20-287,102.40

Finding the Fourth Proportional to 918,124.80, 1,377,187.20 and 287,102.40

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Solution

The fourth proportional to 918,124.80, 1,377,187.20 and 287,102.40 is: 430,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,124.80 : 1,377,187.20 = 287,102.40 : x
  2. Step 2: Convert to fraction form
    918,124.80/1,377,187.20 = 287,102.40/x
  3. Step 3: Cross multiply
    918,124.80x = 1,377,187.20 × 287,102.40
  4. Step 4: Simplify right side
    918,124.80x = 395,393,750,369.28
  5. Step 5: Solve for x
    x = 395,393,750,369.28/918,124.80
  6. Step 6: Final answer
    x = 430,653.60

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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.