Home / 725,157.36-1,000,734.95-398,467.70

Finding the Fourth Proportional to 725,157.36, 1,000,734.95 and 398,467.70

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Solution

The fourth proportional to 725,157.36, 1,000,734.95 and 398,467.70 is: 549,895.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,157.36 : 1,000,734.95 = 398,467.70 : x
  2. Step 2: Convert to fraction form
    725,157.36/1,000,734.95 = 398,467.70/x
  3. Step 3: Cross multiply
    725,157.36x = 1,000,734.95 × 398,467.70
  4. Step 4: Simplify right side
    725,157.36x = 398,760,559,210.50
  5. Step 5: Solve for x
    x = 398,760,559,210.50/725,157.36
  6. Step 6: Final answer
    x = 549,895.21

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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.