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Finding the Fourth Proportional to 644,483.28, 889,386.48 and 358,030.08

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Solution

The fourth proportional to 644,483.28, 889,386.48 and 358,030.08 is: 494,081.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,483.28 : 889,386.48 = 358,030.08 : x
  2. Step 2: Convert to fraction form
    644,483.28/889,386.48 = 358,030.08/x
  3. Step 3: Cross multiply
    644,483.28x = 889,386.48 × 358,030.08
  4. Step 4: Simplify right side
    644,483.28x = 318,427,112,585.32
  5. Step 5: Solve for x
    x = 318,427,112,585.32/644,483.28
  6. Step 6: Final answer
    x = 494,081.26

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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.