Home / 722,360.12-996,865.80-400,075.70

Finding the Fourth Proportional to 722,360.12, 996,865.80 and 400,075.70

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Solution

The fourth proportional to 722,360.12, 996,865.80 and 400,075.70 is: 552,109.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,360.12 : 996,865.80 = 400,075.70 : x
  2. Step 2: Convert to fraction form
    722,360.12/996,865.80 = 400,075.70/x
  3. Step 3: Cross multiply
    722,360.12x = 996,865.80 × 400,075.70
  4. Step 4: Simplify right side
    722,360.12x = 398,821,782,741.06
  5. Step 5: Solve for x
    x = 398,821,782,741.06/722,360.12
  6. Step 6: Final answer
    x = 552,109.36

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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.