Home / 528,025.90-790,872.45-278,416.30

Finding the Fourth Proportional to 528,025.90, 790,872.45 and 278,416.30

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Solution

The fourth proportional to 528,025.90, 790,872.45 and 278,416.30 is: 417,009.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,025.90 : 790,872.45 = 278,416.30 : x
  2. Step 2: Convert to fraction form
    528,025.90/790,872.45 = 278,416.30/x
  3. Step 3: Cross multiply
    528,025.90x = 790,872.45 × 278,416.30
  4. Step 4: Simplify right side
    528,025.90x = 220,191,781,300.94
  5. Step 5: Solve for x
    x = 220,191,781,300.94/528,025.90
  6. Step 6: Final answer
    x = 417,009.43

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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.