Home / 672,973.50-1,009,457-639,335.82

Finding the Fourth Proportional to 672,973.50, 1,009,457 and 639,335.82

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Solution

The fourth proportional to 672,973.50, 1,009,457 and 639,335.82 is: 959,000.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,973.50 : 1,009,457 = 639,335.82 : x
  2. Step 2: Convert to fraction form
    672,973.50/1,009,457 = 639,335.82/x
  3. Step 3: Cross multiply
    672,973.50x = 1,009,457 × 639,335.82
  4. Step 4: Simplify right side
    672,973.50x = 645,382,018,849.74
  5. Step 5: Solve for x
    x = 645,382,018,849.74/672,973.50
  6. Step 6: Final answer
    x = 959,000.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.