Home / 830,074.09-1,145,583.73-485,889.30

Finding the Fourth Proportional to 830,074.09, 1,145,583.73 and 485,889.30

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Solution

The fourth proportional to 830,074.09, 1,145,583.73 and 485,889.30 is: 670,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,074.09 : 1,145,583.73 = 485,889.30 : x
  2. Step 2: Convert to fraction form
    830,074.09/1,145,583.73 = 485,889.30/x
  3. Step 3: Cross multiply
    830,074.09x = 1,145,583.73 × 485,889.30
  4. Step 4: Simplify right side
    830,074.09x = 556,626,876,661.09
  5. Step 5: Solve for x
    x = 556,626,876,661.09/830,074.09
  6. Step 6: Final answer
    x = 670,574.93

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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.