Home / 918,720.07-1,378,359.84-469,756.30

Finding the Fourth Proportional to 918,720.07, 1,378,359.84 and 469,756.30

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Solution

The fourth proportional to 918,720.07, 1,378,359.84 and 469,756.30 is: 704,777.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,720.07 : 1,378,359.84 = 469,756.30 : x
  2. Step 2: Convert to fraction form
    918,720.07/1,378,359.84 = 469,756.30/x
  3. Step 3: Cross multiply
    918,720.07x = 1,378,359.84 × 469,756.30
  4. Step 4: Simplify right side
    918,720.07x = 647,493,218,506.99
  5. Step 5: Solve for x
    x = 647,493,218,506.99/918,720.07
  6. Step 6: Final answer
    x = 704,777.48

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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.