Home / 992,993.80-1,490,106.30-520,018.60

Finding the Fourth Proportional to 992,993.80, 1,490,106.30 and 520,018.60

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Solution

The fourth proportional to 992,993.80, 1,490,106.30 and 520,018.60 is: 780,350.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,993.80 : 1,490,106.30 = 520,018.60 : x
  2. Step 2: Convert to fraction form
    992,993.80/1,490,106.30 = 520,018.60/x
  3. Step 3: Cross multiply
    992,993.80x = 1,490,106.30 × 520,018.60
  4. Step 4: Simplify right side
    992,993.80x = 774,882,991,977.18
  5. Step 5: Solve for x
    x = 774,882,991,977.18/992,993.80
  6. Step 6: Final answer
    x = 780,350.28

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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.