Home / 426,503.15-636,989.30-386,442.03

Finding the Fourth Proportional to 426,503.15, 636,989.30 and 386,442.03

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Solution

The fourth proportional to 426,503.15, 636,989.30 and 386,442.03 is: 577,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,503.15 : 636,989.30 = 386,442.03 : x
  2. Step 2: Convert to fraction form
    426,503.15/636,989.30 = 386,442.03/x
  3. Step 3: Cross multiply
    426,503.15x = 636,989.30 × 386,442.03
  4. Step 4: Simplify right side
    426,503.15x = 246,159,439,146.38
  5. Step 5: Solve for x
    x = 246,159,439,146.38/426,503.15
  6. Step 6: Final answer
    x = 577,157.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.