Home / 878,484.54-1,212,438.69-556,224.54

Finding the Fourth Proportional to 878,484.54, 1,212,438.69 and 556,224.54

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Solution

The fourth proportional to 878,484.54, 1,212,438.69 and 556,224.54 is: 767,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,484.54 : 1,212,438.69 = 556,224.54 : x
  2. Step 2: Convert to fraction form
    878,484.54/1,212,438.69 = 556,224.54/x
  3. Step 3: Cross multiply
    878,484.54x = 1,212,438.69 × 556,224.54
  4. Step 4: Simplify right side
    878,484.54x = 674,388,152,623.45
  5. Step 5: Solve for x
    x = 674,388,152,623.45/878,484.54
  6. Step 6: Final answer
    x = 767,672.19

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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.