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Finding the Fourth Proportional to 834,780.80, 1,151,998.08 and 452,806.40

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Solution

The fourth proportional to 834,780.80, 1,151,998.08 and 452,806.40 is: 624,873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    834,780.80 : 1,151,998.08 = 452,806.40 : x
  2. Step 2: Convert to fraction form
    834,780.80/1,151,998.08 = 452,806.40/x
  3. Step 3: Cross multiply
    834,780.80x = 1,151,998.08 × 452,806.40
  4. Step 4: Simplify right side
    834,780.80x = 521,632,103,411.71
  5. Step 5: Solve for x
    x = 521,632,103,411.71/834,780.80
  6. Step 6: Final answer
    x = 624,873.14

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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.