Home / 426,124.37-638,577.56-312,916.47

Finding the Fourth Proportional to 426,124.37, 638,577.56 and 312,916.47

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Solution

The fourth proportional to 426,124.37, 638,577.56 and 312,916.47 is: 468,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,124.37 : 638,577.56 = 312,916.47 : x
  2. Step 2: Convert to fraction form
    426,124.37/638,577.56 = 312,916.47/x
  3. Step 3: Cross multiply
    426,124.37x = 638,577.56 × 312,916.47
  4. Step 4: Simplify right side
    426,124.37x = 199,821,436,678.70
  5. Step 5: Solve for x
    x = 199,821,436,678.70/426,124.37
  6. Step 6: Final answer
    x = 468,927.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.