Home / 739,953.90-1,021,137.28-400,422.15

Finding the Fourth Proportional to 739,953.90, 1,021,137.28 and 400,422.15

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Solution

The fourth proportional to 739,953.90, 1,021,137.28 and 400,422.15 is: 552,583.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,953.90 : 1,021,137.28 = 400,422.15 : x
  2. Step 2: Convert to fraction form
    739,953.90/1,021,137.28 = 400,422.15/x
  3. Step 3: Cross multiply
    739,953.90x = 1,021,137.28 × 400,422.15
  4. Step 4: Simplify right side
    739,953.90x = 408,885,985,102.75
  5. Step 5: Solve for x
    x = 408,885,985,102.75/739,953.90
  6. Step 6: Final answer
    x = 552,583.05

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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.