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Finding the Fourth Proportional to 686,333.60, 947,175.32 and 380,442.48

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Solution

The fourth proportional to 686,333.60, 947,175.32 and 380,442.48 is: 525,030.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,333.60 : 947,175.32 = 380,442.48 : x
  2. Step 2: Convert to fraction form
    686,333.60/947,175.32 = 380,442.48/x
  3. Step 3: Cross multiply
    686,333.60x = 947,175.32 × 380,442.48
  4. Step 4: Simplify right side
    686,333.60x = 360,345,727,735.59
  5. Step 5: Solve for x
    x = 360,345,727,735.59/686,333.60
  6. Step 6: Final answer
    x = 525,030.00

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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.