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Finding the Fourth Proportional to 528,216.60, 790,251.30 and 478,450.20

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Solution

The fourth proportional to 528,216.60, 790,251.30 and 478,450.20 is: 715,797.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,216.60 : 790,251.30 = 478,450.20 : x
  2. Step 2: Convert to fraction form
    528,216.60/790,251.30 = 478,450.20/x
  3. Step 3: Cross multiply
    528,216.60x = 790,251.30 × 478,450.20
  4. Step 4: Simplify right side
    528,216.60x = 378,095,892,535.26
  5. Step 5: Solve for x
    x = 378,095,892,535.26/528,216.60
  6. Step 6: Final answer
    x = 715,797.07

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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.