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Finding the Fourth Proportional to 528,050.75, 728,836.08 and 313,315.43

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Solution

The fourth proportional to 528,050.75, 728,836.08 and 313,315.43 is: 432,450.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,050.75 : 728,836.08 = 313,315.43 : x
  2. Step 2: Convert to fraction form
    528,050.75/728,836.08 = 313,315.43/x
  3. Step 3: Cross multiply
    528,050.75x = 728,836.08 × 313,315.43
  4. Step 4: Simplify right side
    528,050.75x = 228,355,589,804.71
  5. Step 5: Solve for x
    x = 228,355,589,804.71/528,050.75
  6. Step 6: Final answer
    x = 432,450.08

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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.