Home / 5,430,768.85-7,493,628.75-3,138,487.21

Finding the Fourth Proportional to 5,430,768.85, 7,493,628.75 and 3,138,487.21

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Solution

The fourth proportional to 5,430,768.85, 7,493,628.75 and 3,138,487.21 is: 4,330,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430,768.85 : 7,493,628.75 = 3,138,487.21 : x
  2. Step 2: Convert to fraction form
    5,430,768.85/7,493,628.75 = 3,138,487.21/x
  3. Step 3: Cross multiply
    5,430,768.85x = 7,493,628.75 × 3,138,487.21
  4. Step 4: Simplify right side
    5,430,768.85x = 23,518,657,988,363.29
  5. Step 5: Solve for x
    x = 23,518,657,988,363.29/5,430,768.85
  6. Step 6: Final answer
    x = 4,330,631.38

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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.