Home / 528,990.09-792,707.34-312,626.13

Finding the Fourth Proportional to 528,990.09, 792,707.34 and 312,626.13

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Solution

The fourth proportional to 528,990.09, 792,707.34 and 312,626.13 is: 468,479.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,990.09 : 792,707.34 = 312,626.13 : x
  2. Step 2: Convert to fraction form
    528,990.09/792,707.34 = 312,626.13/x
  3. Step 3: Cross multiply
    528,990.09x = 792,707.34 × 312,626.13
  4. Step 4: Simplify right side
    528,990.09x = 247,821,030,117.88
  5. Step 5: Solve for x
    x = 247,821,030,117.88/528,990.09
  6. Step 6: Final answer
    x = 468,479.53

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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.