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Finding the Fourth Proportional to 662,988.40, 994,482.60 and 289,740.40

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Solution

The fourth proportional to 662,988.40, 994,482.60 and 289,740.40 is: 434,610.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,988.40 : 994,482.60 = 289,740.40 : x
  2. Step 2: Convert to fraction form
    662,988.40/994,482.60 = 289,740.40/x
  3. Step 3: Cross multiply
    662,988.40x = 994,482.60 × 289,740.40
  4. Step 4: Simplify right side
    662,988.40x = 288,141,786,317.04
  5. Step 5: Solve for x
    x = 288,141,786,317.04/662,988.40
  6. Step 6: Final answer
    x = 434,610.60

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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.