Home / 679,901.21-938,244.08-373,977.57

Finding the Fourth Proportional to 679,901.21, 938,244.08 and 373,977.57

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Solution

The fourth proportional to 679,901.21, 938,244.08 and 373,977.57 is: 516,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,901.21 : 938,244.08 = 373,977.57 : x
  2. Step 2: Convert to fraction form
    679,901.21/938,244.08 = 373,977.57/x
  3. Step 3: Cross multiply
    679,901.21x = 938,244.08 × 373,977.57
  4. Step 4: Simplify right side
    679,901.21x = 350,882,239,235.40
  5. Step 5: Solve for x
    x = 350,882,239,235.40/679,901.21
  6. Step 6: Final answer
    x = 516,078.27

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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.