Home / 725,079.70-1,000,638.36-496,117.20

Finding the Fourth Proportional to 725,079.70, 1,000,638.36 and 496,117.20

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Solution

The fourth proportional to 725,079.70, 1,000,638.36 and 496,117.20 is: 684,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,079.70 : 1,000,638.36 = 496,117.20 : x
  2. Step 2: Convert to fraction form
    725,079.70/1,000,638.36 = 496,117.20/x
  3. Step 3: Cross multiply
    725,079.70x = 1,000,638.36 × 496,117.20
  4. Step 4: Simplify right side
    725,079.70x = 496,433,905,128.19
  5. Step 5: Solve for x
    x = 496,433,905,128.19/725,079.70
  6. Step 6: Final answer
    x = 684,661.15

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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.