Home / 725,302.80-1,000,899.68-403,013.72

Finding the Fourth Proportional to 725,302.80, 1,000,899.68 and 403,013.72

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Solution

The fourth proportional to 725,302.80, 1,000,899.68 and 403,013.72 is: 556,148.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,302.80 : 1,000,899.68 = 403,013.72 : x
  2. Step 2: Convert to fraction form
    725,302.80/1,000,899.68 = 403,013.72/x
  3. Step 3: Cross multiply
    725,302.80x = 1,000,899.68 × 403,013.72
  4. Step 4: Simplify right side
    725,302.80x = 403,376,303,383.61
  5. Step 5: Solve for x
    x = 403,376,303,383.61/725,302.80
  6. Step 6: Final answer
    x = 556,148.83

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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.