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Finding the Fourth Proportional to 662,963.40, 994,445.10 and 289,715.40

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Solution

The fourth proportional to 662,963.40, 994,445.10 and 289,715.40 is: 434,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,963.40 : 994,445.10 = 289,715.40 : x
  2. Step 2: Convert to fraction form
    662,963.40/994,445.10 = 289,715.40/x
  3. Step 3: Cross multiply
    662,963.40x = 994,445.10 × 289,715.40
  4. Step 4: Simplify right side
    662,963.40x = 288,106,059,924.54
  5. Step 5: Solve for x
    x = 288,106,059,924.54/662,963.40
  6. Step 6: Final answer
    x = 434,573.10

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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.