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Finding the Fourth Proportional to 673,619.60, 929,602.76 and 371,813.84

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Solution

The fourth proportional to 673,619.60, 929,602.76 and 371,813.84 is: 513,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,619.60 : 929,602.76 = 371,813.84 : x
  2. Step 2: Convert to fraction form
    673,619.60/929,602.76 = 371,813.84/x
  3. Step 3: Cross multiply
    673,619.60x = 929,602.76 × 371,813.84
  4. Step 4: Simplify right side
    673,619.60x = 345,639,171,870.20
  5. Step 5: Solve for x
    x = 345,639,171,870.20/673,619.60
  6. Step 6: Final answer
    x = 513,107.36

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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.