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Finding the Fourth Proportional to 768,901.60, 1,153,352.40 and 207,936.10

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Solution

The fourth proportional to 768,901.60, 1,153,352.40 and 207,936.10 is: 311,904.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,901.60 : 1,153,352.40 = 207,936.10 : x
  2. Step 2: Convert to fraction form
    768,901.60/1,153,352.40 = 207,936.10/x
  3. Step 3: Cross multiply
    768,901.60x = 1,153,352.40 × 207,936.10
  4. Step 4: Simplify right side
    768,901.60x = 239,823,599,981.64
  5. Step 5: Solve for x
    x = 239,823,599,981.64/768,901.60
  6. Step 6: Final answer
    x = 311,904.15

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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.