Home / 1,220,436.04-1,830,571.98-421,728.52

Finding the Fourth Proportional to 1,220,436.04, 1,830,571.98 and 421,728.52

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Solution

The fourth proportional to 1,220,436.04, 1,830,571.98 and 421,728.52 is: 632,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,436.04 : 1,830,571.98 = 421,728.52 : x
  2. Step 2: Convert to fraction form
    1,220,436.04/1,830,571.98 = 421,728.52/x
  3. Step 3: Cross multiply
    1,220,436.04x = 1,830,571.98 × 421,728.52
  4. Step 4: Simplify right side
    1,220,436.04x = 772,004,411,878.87
  5. Step 5: Solve for x
    x = 772,004,411,878.87/1,220,436.04
  6. Step 6: Final answer
    x = 632,564.42

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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.