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Finding the Fourth Proportional to 453,965.40, 681,604.20 and 342,428.40

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Solution

The fourth proportional to 453,965.40, 681,604.20 and 342,428.40 is: 514,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,965.40 : 681,604.20 = 342,428.40 : x
  2. Step 2: Convert to fraction form
    453,965.40/681,604.20 = 342,428.40/x
  3. Step 3: Cross multiply
    453,965.40x = 681,604.20 × 342,428.40
  4. Step 4: Simplify right side
    453,965.40x = 233,400,635,639.28
  5. Step 5: Solve for x
    x = 233,400,635,639.28/453,965.40
  6. Step 6: Final answer
    x = 514,137.50

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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.