Home / 646,021.80-969,032.70-409,631.40

Finding the Fourth Proportional to 646,021.80, 969,032.70 and 409,631.40

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Solution

The fourth proportional to 646,021.80, 969,032.70 and 409,631.40 is: 614,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,021.80 : 969,032.70 = 409,631.40 : x
  2. Step 2: Convert to fraction form
    646,021.80/969,032.70 = 409,631.40/x
  3. Step 3: Cross multiply
    646,021.80x = 969,032.70 × 409,631.40
  4. Step 4: Simplify right side
    646,021.80x = 396,946,221,546.78
  5. Step 5: Solve for x
    x = 396,946,221,546.78/646,021.80
  6. Step 6: Final answer
    x = 614,447.10

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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.