Home / 889,790.80-1,227,911.40-487,382.80

Finding the Fourth Proportional to 889,790.80, 1,227,911.40 and 487,382.80

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Solution

The fourth proportional to 889,790.80, 1,227,911.40 and 487,382.80 is: 672,588.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,790.80 : 1,227,911.40 = 487,382.80 : x
  2. Step 2: Convert to fraction form
    889,790.80/1,227,911.40 = 487,382.80/x
  3. Step 3: Cross multiply
    889,790.80x = 1,227,911.40 × 487,382.80
  4. Step 4: Simplify right side
    889,790.80x = 598,462,896,283.92
  5. Step 5: Solve for x
    x = 598,462,896,283.92/889,790.80
  6. Step 6: Final answer
    x = 672,588.32

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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.