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Finding the Fourth Proportional to 662,138.94, 913,688.46 and 371,684.01

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Solution

The fourth proportional to 662,138.94, 913,688.46 and 371,684.01 is: 512,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,138.94 : 913,688.46 = 371,684.01 : x
  2. Step 2: Convert to fraction form
    662,138.94/913,688.46 = 371,684.01/x
  3. Step 3: Cross multiply
    662,138.94x = 913,688.46 × 371,684.01
  4. Step 4: Simplify right side
    662,138.94x = 339,603,390,703.53
  5. Step 5: Solve for x
    x = 339,603,390,703.53/662,138.94
  6. Step 6: Final answer
    x = 512,888.41

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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.