Home / 644,505.04-889,386.78-358,042.60

Finding the Fourth Proportional to 644,505.04, 889,386.78 and 358,042.60

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Solution

The fourth proportional to 644,505.04, 889,386.78 and 358,042.60 is: 494,082.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,505.04 : 889,386.78 = 358,042.60 : x
  2. Step 2: Convert to fraction form
    644,505.04/889,386.78 = 358,042.60/x
  3. Step 3: Cross multiply
    644,505.04x = 889,386.78 × 358,042.60
  4. Step 4: Simplify right side
    644,505.04x = 318,438,355,116.83
  5. Step 5: Solve for x
    x = 318,438,355,116.83/644,505.04
  6. Step 6: Final answer
    x = 494,082.02

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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.