Home / 1,320,012.15-1,821,617.50-716,400.15

Finding the Fourth Proportional to 1,320,012.15, 1,821,617.50 and 716,400.15

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Solution

The fourth proportional to 1,320,012.15, 1,821,617.50 and 716,400.15 is: 988,632.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,012.15 : 1,821,617.50 = 716,400.15 : x
  2. Step 2: Convert to fraction form
    1,320,012.15/1,821,617.50 = 716,400.15/x
  3. Step 3: Cross multiply
    1,320,012.15x = 1,821,617.50 × 716,400.15
  4. Step 4: Simplify right side
    1,320,012.15x = 1,305,007,050,242.63
  5. Step 5: Solve for x
    x = 1,305,007,050,242.63/1,320,012.15
  6. Step 6: Final answer
    x = 988,632.60

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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.