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Finding the Fourth Proportional to 427,465.25, 638,040.90 and 377,036.81

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Solution

The fourth proportional to 427,465.25, 638,040.90 and 377,036.81 is: 562,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,465.25 : 638,040.90 = 377,036.81 : x
  2. Step 2: Convert to fraction form
    427,465.25/638,040.90 = 377,036.81/x
  3. Step 3: Cross multiply
    427,465.25x = 638,040.90 × 377,036.81
  4. Step 4: Simplify right side
    427,465.25x = 240,564,902,395.33
  5. Step 5: Solve for x
    x = 240,564,902,395.33/427,465.25
  6. Step 6: Final answer
    x = 562,770.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.