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Finding the Fourth Proportional to 530,840.80, 797,816.40 and 521,509.60

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Solution

The fourth proportional to 530,840.80, 797,816.40 and 521,509.60 is: 783,792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,840.80 : 797,816.40 = 521,509.60 : x
  2. Step 2: Convert to fraction form
    530,840.80/797,816.40 = 521,509.60/x
  3. Step 3: Cross multiply
    530,840.80x = 797,816.40 × 521,509.60
  4. Step 4: Simplify right side
    530,840.80x = 416,068,911,637.44
  5. Step 5: Solve for x
    x = 416,068,911,637.44/530,840.80
  6. Step 6: Final answer
    x = 783,792.26

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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.