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Finding the Fourth Proportional to 522,442.94, 720,970.62 and 304,660.40

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Solution

The fourth proportional to 522,442.94, 720,970.62 and 304,660.40 is: 420,430.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,442.94 : 720,970.62 = 304,660.40 : x
  2. Step 2: Convert to fraction form
    522,442.94/720,970.62 = 304,660.40/x
  3. Step 3: Cross multiply
    522,442.94x = 720,970.62 × 304,660.40
  4. Step 4: Simplify right side
    522,442.94x = 219,651,197,477.45
  5. Step 5: Solve for x
    x = 219,651,197,477.45/522,442.94
  6. Step 6: Final answer
    x = 420,430.98

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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.