Home / 528,278.18-728,214.98-323,950.20

Finding the Fourth Proportional to 528,278.18, 728,214.98 and 323,950.20

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Solution

The fourth proportional to 528,278.18, 728,214.98 and 323,950.20 is: 446,555.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,278.18 : 728,214.98 = 323,950.20 : x
  2. Step 2: Convert to fraction form
    528,278.18/728,214.98 = 323,950.20/x
  3. Step 3: Cross multiply
    528,278.18x = 728,214.98 × 323,950.20
  4. Step 4: Simplify right side
    528,278.18x = 235,905,388,414.00
  5. Step 5: Solve for x
    x = 235,905,388,414.00/528,278.18
  6. Step 6: Final answer
    x = 446,555.24

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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.