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Finding the Fourth Proportional to 876,859.60, 1,314,560.40 and 371,808.40

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Solution

The fourth proportional to 876,859.60, 1,314,560.40 and 371,808.40 is: 557,403.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,859.60 : 1,314,560.40 = 371,808.40 : x
  2. Step 2: Convert to fraction form
    876,859.60/1,314,560.40 = 371,808.40/x
  3. Step 3: Cross multiply
    876,859.60x = 1,314,560.40 × 371,808.40
  4. Step 4: Simplify right side
    876,859.60x = 488,764,599,027.36
  5. Step 5: Solve for x
    x = 488,764,599,027.36/876,859.60
  6. Step 6: Final answer
    x = 557,403.49

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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.