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Finding the Fourth Proportional to 670,479.72, 999,403.44 and 616,671.33

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Solution

The fourth proportional to 670,479.72, 999,403.44 and 616,671.33 is: 919,197.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,479.72 : 999,403.44 = 616,671.33 : x
  2. Step 2: Convert to fraction form
    670,479.72/999,403.44 = 616,671.33/x
  3. Step 3: Cross multiply
    670,479.72x = 999,403.44 × 616,671.33
  4. Step 4: Simplify right side
    670,479.72x = 616,303,448,551.38
  5. Step 5: Solve for x
    x = 616,303,448,551.38/670,479.72
  6. Step 6: Final answer
    x = 919,197.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.