Home / 460,917.40-689,993.70-405,621.40

Finding the Fourth Proportional to 460,917.40, 689,993.70 and 405,621.40

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Solution

The fourth proportional to 460,917.40, 689,993.70 and 405,621.40 is: 607,215.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,917.40 : 689,993.70 = 405,621.40 : x
  2. Step 2: Convert to fraction form
    460,917.40/689,993.70 = 405,621.40/x
  3. Step 3: Cross multiply
    460,917.40x = 689,993.70 × 405,621.40
  4. Step 4: Simplify right side
    460,917.40x = 279,876,210,585.18
  5. Step 5: Solve for x
    x = 279,876,210,585.18/460,917.40
  6. Step 6: Final answer
    x = 607,215.55

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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.