Home / 641,666.21-885,566.72-480,238.88

Finding the Fourth Proportional to 641,666.21, 885,566.72 and 480,238.88

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Solution

The fourth proportional to 641,666.21, 885,566.72 and 480,238.88 is: 662,780.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,666.21 : 885,566.72 = 480,238.88 : x
  2. Step 2: Convert to fraction form
    641,666.21/885,566.72 = 480,238.88/x
  3. Step 3: Cross multiply
    641,666.21x = 885,566.72 × 480,238.88
  4. Step 4: Simplify right side
    641,666.21x = 425,283,566,550.84
  5. Step 5: Solve for x
    x = 425,283,566,550.84/641,666.21
  6. Step 6: Final answer
    x = 662,780.06

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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.