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Finding the Fourth Proportional to 662,128.50, 913,674.14 and 371,673.58

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Solution

The fourth proportional to 662,128.50, 913,674.14 and 371,673.58 is: 512,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,128.50 : 913,674.14 = 371,673.58 : x
  2. Step 2: Convert to fraction form
    662,128.50/913,674.14 = 371,673.58/x
  3. Step 3: Cross multiply
    662,128.50x = 913,674.14 × 371,673.58
  4. Step 4: Simplify right side
    662,128.50x = 339,588,538,567.22
  5. Step 5: Solve for x
    x = 339,588,538,567.22/662,128.50
  6. Step 6: Final answer
    x = 512,874.07

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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.