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Finding the Fourth Proportional to 530,821.80, 797,787.90 and 521,490.60

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Solution

The fourth proportional to 530,821.80, 797,787.90 and 521,490.60 is: 783,763.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,821.80 : 797,787.90 = 521,490.60 : x
  2. Step 2: Convert to fraction form
    530,821.80/797,787.90 = 521,490.60/x
  3. Step 3: Cross multiply
    530,821.80x = 797,787.90 × 521,490.60
  4. Step 4: Simplify right side
    530,821.80x = 416,038,890,643.74
  5. Step 5: Solve for x
    x = 416,038,890,643.74/530,821.80
  6. Step 6: Final answer
    x = 783,763.76

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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.