Home / 692,082.66-954,911.07-420,143.70

Finding the Fourth Proportional to 692,082.66, 954,911.07 and 420,143.70

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Solution

The fourth proportional to 692,082.66, 954,911.07 and 420,143.70 is: 579,699.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,082.66 : 954,911.07 = 420,143.70 : x
  2. Step 2: Convert to fraction form
    692,082.66/954,911.07 = 420,143.70/x
  3. Step 3: Cross multiply
    692,082.66x = 954,911.07 × 420,143.70
  4. Step 4: Simplify right side
    692,082.66x = 401,199,870,120.76
  5. Step 5: Solve for x
    x = 401,199,870,120.76/692,082.66
  6. Step 6: Final answer
    x = 579,699.35

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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.