Home / 691,876.80-1,038,009.60-292,708.80

Finding the Fourth Proportional to 691,876.80, 1,038,009.60 and 292,708.80

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Solution

The fourth proportional to 691,876.80, 1,038,009.60 and 292,708.80 is: 439,145.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,876.80 : 1,038,009.60 = 292,708.80 : x
  2. Step 2: Convert to fraction form
    691,876.80/1,038,009.60 = 292,708.80/x
  3. Step 3: Cross multiply
    691,876.80x = 1,038,009.60 × 292,708.80
  4. Step 4: Simplify right side
    691,876.80x = 303,834,544,404.48
  5. Step 5: Solve for x
    x = 303,834,544,404.48/691,876.80
  6. Step 6: Final answer
    x = 439,145.44

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1.5x scale

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.