Home / 985,143.15-1,477,255.42-511,701.39

Finding the Fourth Proportional to 985,143.15, 1,477,255.42 and 511,701.39

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Solution

The fourth proportional to 985,143.15, 1,477,255.42 and 511,701.39 is: 767,313.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,143.15 : 1,477,255.42 = 511,701.39 : x
  2. Step 2: Convert to fraction form
    985,143.15/1,477,255.42 = 511,701.39/x
  3. Step 3: Cross multiply
    985,143.15x = 1,477,255.42 × 511,701.39
  4. Step 4: Simplify right side
    985,143.15x = 755,913,651,799.03
  5. Step 5: Solve for x
    x = 755,913,651,799.03/985,143.15
  6. Step 6: Final answer
    x = 767,313.51

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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.