Home / 915,457.42-1,263,269.54-528,288.94

Finding the Fourth Proportional to 915,457.42, 1,263,269.54 and 528,288.94

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Solution

The fourth proportional to 915,457.42, 1,263,269.54 and 528,288.94 is: 729,003.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,457.42 : 1,263,269.54 = 528,288.94 : x
  2. Step 2: Convert to fraction form
    915,457.42/1,263,269.54 = 528,288.94/x
  3. Step 3: Cross multiply
    915,457.42x = 1,263,269.54 × 528,288.94
  4. Step 4: Simplify right side
    915,457.42x = 667,371,326,220.89
  5. Step 5: Solve for x
    x = 667,371,326,220.89/915,457.42
  6. Step 6: Final answer
    x = 729,003.13

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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.