Home / 644,756.84-889,488.41-402,619.04

Finding the Fourth Proportional to 644,756.84, 889,488.41 and 402,619.04

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Solution

The fourth proportional to 644,756.84, 889,488.41 and 402,619.04 is: 555,441.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,756.84 : 889,488.41 = 402,619.04 : x
  2. Step 2: Convert to fraction form
    644,756.84/889,488.41 = 402,619.04/x
  3. Step 3: Cross multiply
    644,756.84x = 889,488.41 × 402,619.04
  4. Step 4: Simplify right side
    644,756.84x = 358,124,965,277.88
  5. Step 5: Solve for x
    x = 358,124,965,277.88/644,756.84
  6. Step 6: Final answer
    x = 555,441.90

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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.