Home / 918,604.80-1,377,950.40-287,539.20

Finding the Fourth Proportional to 918,604.80, 1,377,950.40 and 287,539.20

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Solution

The fourth proportional to 918,604.80, 1,377,950.40 and 287,539.20 is: 431,322.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,604.80 : 1,377,950.40 = 287,539.20 : x
  2. Step 2: Convert to fraction form
    918,604.80/1,377,950.40 = 287,539.20/x
  3. Step 3: Cross multiply
    918,604.80x = 1,377,950.40 × 287,539.20
  4. Step 4: Simplify right side
    918,604.80x = 396,214,755,655.68
  5. Step 5: Solve for x
    x = 396,214,755,655.68/918,604.80
  6. Step 6: Final answer
    x = 431,322.32

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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.