Home / 725,128.34-1,000,703.23-419,300.69

Finding the Fourth Proportional to 725,128.34, 1,000,703.23 and 419,300.69

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Solution

The fourth proportional to 725,128.34, 1,000,703.23 and 419,300.69 is: 578,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,128.34 : 1,000,703.23 = 419,300.69 : x
  2. Step 2: Convert to fraction form
    725,128.34/1,000,703.23 = 419,300.69/x
  3. Step 3: Cross multiply
    725,128.34x = 1,000,703.23 × 419,300.69
  4. Step 4: Simplify right side
    725,128.34x = 419,595,548,772.46
  5. Step 5: Solve for x
    x = 419,595,548,772.46/725,128.34
  6. Step 6: Final answer
    x = 578,650.05

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Double scale
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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.