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Finding the Fourth Proportional to 528,038.76, 728,819.52 and 313,303.44

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Solution

The fourth proportional to 528,038.76, 728,819.52 and 313,303.44 is: 432,433.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,038.76 : 728,819.52 = 313,303.44 : x
  2. Step 2: Convert to fraction form
    528,038.76/728,819.52 = 313,303.44/x
  3. Step 3: Cross multiply
    528,038.76x = 728,819.52 × 313,303.44
  4. Step 4: Simplify right side
    528,038.76x = 228,341,662,755.15
  5. Step 5: Solve for x
    x = 228,341,662,755.15/528,038.76
  6. Step 6: Final answer
    x = 432,433.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.