Home / 1,018,320.65-1,525,155.90-486,215.34

Finding the Fourth Proportional to 1,018,320.65, 1,525,155.90 and 486,215.34

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Solution

The fourth proportional to 1,018,320.65, 1,525,155.90 and 486,215.34 is: 728,212.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,320.65 : 1,525,155.90 = 486,215.34 : x
  2. Step 2: Convert to fraction form
    1,018,320.65/1,525,155.90 = 486,215.34/x
  3. Step 3: Cross multiply
    1,018,320.65x = 1,525,155.90 × 486,215.34
  4. Step 4: Simplify right side
    1,018,320.65x = 741,554,194,471.51
  5. Step 5: Solve for x
    x = 741,554,194,471.51/1,018,320.65
  6. Step 6: Final answer
    x = 728,212.87

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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.