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Finding the Fourth Proportional to 484,683.40, 668,741.70 and 291,123.64

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Solution

The fourth proportional to 484,683.40, 668,741.70 and 291,123.64 is: 401,677.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,683.40 : 668,741.70 = 291,123.64 : x
  2. Step 2: Convert to fraction form
    484,683.40/668,741.70 = 291,123.64/x
  3. Step 3: Cross multiply
    484,683.40x = 668,741.70 × 291,123.64
  4. Step 4: Simplify right side
    484,683.40x = 194,686,517,923.79
  5. Step 5: Solve for x
    x = 194,686,517,923.79/484,683.40
  6. Step 6: Final answer
    x = 401,677.71

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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.