Home / 920,561.28-1,272,022.14-717,137.46

Finding the Fourth Proportional to 920,561.28, 1,272,022.14 and 717,137.46

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Solution

The fourth proportional to 920,561.28, 1,272,022.14 and 717,137.46 is: 990,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,561.28 : 1,272,022.14 = 717,137.46 : x
  2. Step 2: Convert to fraction form
    920,561.28/1,272,022.14 = 717,137.46/x
  3. Step 3: Cross multiply
    920,561.28x = 1,272,022.14 × 717,137.46
  4. Step 4: Simplify right side
    920,561.28x = 912,214,726,543.36
  5. Step 5: Solve for x
    x = 912,214,726,543.36/920,561.28
  6. Step 6: Final answer
    x = 990,933.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.