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Finding the Fourth Proportional to 550,412.55, 759,610.94 and 305,443.67

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Solution

The fourth proportional to 550,412.55, 759,610.94 and 305,443.67 is: 421,535.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,412.55 : 759,610.94 = 305,443.67 : x
  2. Step 2: Convert to fraction form
    550,412.55/759,610.94 = 305,443.67/x
  3. Step 3: Cross multiply
    550,412.55x = 759,610.94 × 305,443.67
  4. Step 4: Simplify right side
    550,412.55x = 232,018,347,960.48
  5. Step 5: Solve for x
    x = 232,018,347,960.48/550,412.55
  6. Step 6: Final answer
    x = 421,535.35

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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.