Home / 724,588.94-999,928.92-397,908.20

Finding the Fourth Proportional to 724,588.94, 999,928.92 and 397,908.20

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Solution

The fourth proportional to 724,588.94, 999,928.92 and 397,908.20 is: 549,111.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,588.94 : 999,928.92 = 397,908.20 : x
  2. Step 2: Convert to fraction form
    724,588.94/999,928.92 = 397,908.20/x
  3. Step 3: Cross multiply
    724,588.94x = 999,928.92 × 397,908.20
  4. Step 4: Simplify right side
    724,588.94x = 397,879,916,685.14
  5. Step 5: Solve for x
    x = 397,879,916,685.14/724,588.94
  6. Step 6: Final answer
    x = 549,111.22

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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.