Home / 947,643.60-1,307,728.71-517,926.78

Finding the Fourth Proportional to 947,643.60, 1,307,728.71 and 517,926.78

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Solution

The fourth proportional to 947,643.60, 1,307,728.71 and 517,926.78 is: 714,728.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,643.60 : 1,307,728.71 = 517,926.78 : x
  2. Step 2: Convert to fraction form
    947,643.60/1,307,728.71 = 517,926.78/x
  3. Step 3: Cross multiply
    947,643.60x = 1,307,728.71 × 517,926.78
  4. Step 4: Simplify right side
    947,643.60x = 677,307,719,883.85
  5. Step 5: Solve for x
    x = 677,307,719,883.85/947,643.60
  6. Step 6: Final answer
    x = 714,728.32

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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.