Home / 874,490.80-1,312,319.40-400,932.40

Finding the Fourth Proportional to 874,490.80, 1,312,319.40 and 400,932.40

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Solution

The fourth proportional to 874,490.80, 1,312,319.40 and 400,932.40 is: 601,665.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,490.80 : 1,312,319.40 = 400,932.40 : x
  2. Step 2: Convert to fraction form
    874,490.80/1,312,319.40 = 400,932.40/x
  3. Step 3: Cross multiply
    874,490.80x = 1,312,319.40 × 400,932.40
  4. Step 4: Simplify right side
    874,490.80x = 526,151,366,608.56
  5. Step 5: Solve for x
    x = 526,151,366,608.56/874,490.80
  6. Step 6: Final answer
    x = 601,665.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.