Home / 739,962.86-1,021,148.72-400,431.11

Finding the Fourth Proportional to 739,962.86, 1,021,148.72 and 400,431.11

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Solution

The fourth proportional to 739,962.86, 1,021,148.72 and 400,431.11 is: 552,594.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,962.86 : 1,021,148.72 = 400,431.11 : x
  2. Step 2: Convert to fraction form
    739,962.86/1,021,148.72 = 400,431.11/x
  3. Step 3: Cross multiply
    739,962.86x = 1,021,148.72 × 400,431.11
  4. Step 4: Simplify right side
    739,962.86x = 408,899,709,818.40
  5. Step 5: Solve for x
    x = 408,899,709,818.40/739,962.86
  6. Step 6: Final answer
    x = 552,594.91

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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.