Home / 669,140.80-922,138.16-656,841.76

Finding the Fourth Proportional to 669,140.80, 922,138.16 and 656,841.76

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Solution

The fourth proportional to 669,140.80, 922,138.16 and 656,841.76 is: 905,188.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,140.80 : 922,138.16 = 656,841.76 : x
  2. Step 2: Convert to fraction form
    669,140.80/922,138.16 = 656,841.76/x
  3. Step 3: Cross multiply
    669,140.80x = 922,138.16 × 656,841.76
  4. Step 4: Simplify right side
    669,140.80x = 605,698,851,977.56
  5. Step 5: Solve for x
    x = 605,698,851,977.56/669,140.80
  6. Step 6: Final answer
    x = 905,188.94

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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.