Home / 644,731.04-889,133.52-402,936.32

Finding the Fourth Proportional to 644,731.04, 889,133.52 and 402,936.32

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Solution

The fourth proportional to 644,731.04, 889,133.52 and 402,936.32 is: 555,680.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,731.04 : 889,133.52 = 402,936.32 : x
  2. Step 2: Convert to fraction form
    644,731.04/889,133.52 = 402,936.32/x
  3. Step 3: Cross multiply
    644,731.04x = 889,133.52 × 402,936.32
  4. Step 4: Simplify right side
    644,731.04x = 358,264,188,537.45
  5. Step 5: Solve for x
    x = 358,264,188,537.45/644,731.04
  6. Step 6: Final answer
    x = 555,680.07

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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.