Home / 1,220,878.64-1,830,727.02-421,879.88

Finding the Fourth Proportional to 1,220,878.64, 1,830,727.02 and 421,879.88

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Solution

The fourth proportional to 1,220,878.64, 1,830,727.02 and 421,879.88 is: 632,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,878.64 : 1,830,727.02 = 421,879.88 : x
  2. Step 2: Convert to fraction form
    1,220,878.64/1,830,727.02 = 421,879.88/x
  3. Step 3: Cross multiply
    1,220,878.64x = 1,830,727.02 × 421,879.88
  4. Step 4: Simplify right side
    1,220,878.64x = 772,346,895,510.36
  5. Step 5: Solve for x
    x = 772,346,895,510.36/1,220,878.64
  6. Step 6: Final answer
    x = 632,615.62

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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.