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Finding the Fourth Proportional to 712,346.40, 983,037.60 and 425,865.60

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Solution

The fourth proportional to 712,346.40, 983,037.60 and 425,865.60 is: 587,694.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,346.40 : 983,037.60 = 425,865.60 : x
  2. Step 2: Convert to fraction form
    712,346.40/983,037.60 = 425,865.60/x
  3. Step 3: Cross multiply
    712,346.40x = 983,037.60 × 425,865.60
  4. Step 4: Simplify right side
    712,346.40x = 418,641,897,346.56
  5. Step 5: Solve for x
    x = 418,641,897,346.56/712,346.40
  6. Step 6: Final answer
    x = 587,694.27

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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.