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Finding the Fourth Proportional to 530,015.60, 795,061.80 and 319,199.60

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Solution

The fourth proportional to 530,015.60, 795,061.80 and 319,199.60 is: 478,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,015.60 : 795,061.80 = 319,199.60 : x
  2. Step 2: Convert to fraction form
    530,015.60/795,061.80 = 319,199.60/x
  3. Step 3: Cross multiply
    530,015.60x = 795,061.80 × 319,199.60
  4. Step 4: Simplify right side
    530,015.60x = 253,783,408,535.28
  5. Step 5: Solve for x
    x = 253,783,408,535.28/530,015.60
  6. Step 6: Final answer
    x = 478,822.53

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1.5x scale

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.