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Finding the Fourth Proportional to 543,212.63, 749,726.20 and 313,728.67

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Solution

The fourth proportional to 543,212.63, 749,726.20 and 313,728.67 is: 432,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,212.63 : 749,726.20 = 313,728.67 : x
  2. Step 2: Convert to fraction form
    543,212.63/749,726.20 = 313,728.67/x
  3. Step 3: Cross multiply
    543,212.63x = 749,726.20 × 313,728.67
  4. Step 4: Simplify right side
    543,212.63x = 235,210,603,590.15
  5. Step 5: Solve for x
    x = 235,210,603,590.15/543,212.63
  6. Step 6: Final answer
    x = 432,999.14

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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.