Home / 918,720.57-1,378,360.59-469,756.80

Finding the Fourth Proportional to 918,720.57, 1,378,360.59 and 469,756.80

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Solution

The fourth proportional to 918,720.57, 1,378,360.59 and 469,756.80 is: 704,778.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,720.57 : 1,378,360.59 = 469,756.80 : x
  2. Step 2: Convert to fraction form
    918,720.57/1,378,360.59 = 469,756.80/x
  3. Step 3: Cross multiply
    918,720.57x = 1,378,360.59 × 469,756.80
  4. Step 4: Simplify right side
    918,720.57x = 647,494,260,004.51
  5. Step 5: Solve for x
    x = 647,494,260,004.51/918,720.57
  6. Step 6: Final answer
    x = 704,778.23

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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.