Home / 644,488.28-889,393.38-358,035.08

Finding the Fourth Proportional to 644,488.28, 889,393.38 and 358,035.08

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Solution

The fourth proportional to 644,488.28, 889,393.38 and 358,035.08 is: 494,088.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,488.28 : 889,393.38 = 358,035.08 : x
  2. Step 2: Convert to fraction form
    644,488.28/889,393.38 = 358,035.08/x
  3. Step 3: Cross multiply
    644,488.28x = 889,393.38 × 358,035.08
  4. Step 4: Simplify right side
    644,488.28x = 318,434,029,959.77
  5. Step 5: Solve for x
    x = 318,434,029,959.77/644,488.28
  6. Step 6: Final answer
    x = 494,088.16

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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.