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Finding the Fourth Proportional to 855,647.96, 1,180,808.21 and 468,456.95

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Solution

The fourth proportional to 855,647.96, 1,180,808.21 and 468,456.95 is: 646,478.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,647.96 : 1,180,808.21 = 468,456.95 : x
  2. Step 2: Convert to fraction form
    855,647.96/1,180,808.21 = 468,456.95/x
  3. Step 3: Cross multiply
    855,647.96x = 1,180,808.21 × 468,456.95
  4. Step 4: Simplify right side
    855,647.96x = 553,157,812,591.56
  5. Step 5: Solve for x
    x = 553,157,812,591.56/855,647.96
  6. Step 6: Final answer
    x = 646,478.27

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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.