Home / 644,333.48-889,624.98-402,724.58

Finding the Fourth Proportional to 644,333.48, 889,624.98 and 402,724.58

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Solution

The fourth proportional to 644,333.48, 889,624.98 and 402,724.58 is: 556,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,333.48 : 889,624.98 = 402,724.58 : x
  2. Step 2: Convert to fraction form
    644,333.48/889,624.98 = 402,724.58/x
  3. Step 3: Cross multiply
    644,333.48x = 889,624.98 × 402,724.58
  4. Step 4: Simplify right side
    644,333.48x = 358,273,846,428.01
  5. Step 5: Solve for x
    x = 358,273,846,428.01/644,333.48
  6. Step 6: Final answer
    x = 556,037.92

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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.