Home / 739,758.61-1,020,862.60-400,219.57

Finding the Fourth Proportional to 739,758.61, 1,020,862.60 and 400,219.57

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Solution

The fourth proportional to 739,758.61, 1,020,862.60 and 400,219.57 is: 552,300.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,758.61 : 1,020,862.60 = 400,219.57 : x
  2. Step 2: Convert to fraction form
    739,758.61/1,020,862.60 = 400,219.57/x
  3. Step 3: Cross multiply
    739,758.61x = 1,020,862.60 × 400,219.57
  4. Step 4: Simplify right side
    739,758.61x = 408,569,190,801.08
  5. Step 5: Solve for x
    x = 408,569,190,801.08/739,758.61
  6. Step 6: Final answer
    x = 552,300.69

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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.