Home / 947,640.42-1,307,740.62-517,920.42

Finding the Fourth Proportional to 947,640.42, 1,307,740.62 and 517,920.42

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Solution

The fourth proportional to 947,640.42, 1,307,740.62 and 517,920.42 is: 714,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,640.42 : 1,307,740.62 = 517,920.42 : x
  2. Step 2: Convert to fraction form
    947,640.42/1,307,740.62 = 517,920.42/x
  3. Step 3: Cross multiply
    947,640.42x = 1,307,740.62 × 517,920.42
  4. Step 4: Simplify right side
    947,640.42x = 677,305,571,161.46
  5. Step 5: Solve for x
    x = 677,305,571,161.46/947,640.42
  6. Step 6: Final answer
    x = 714,728.45

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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.