Home / 890,047.40-1,335,200.70-290,863.40

Finding the Fourth Proportional to 890,047.40, 1,335,200.70 and 290,863.40

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Solution

The fourth proportional to 890,047.40, 1,335,200.70 and 290,863.40 is: 436,337.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,047.40 : 1,335,200.70 = 290,863.40 : x
  2. Step 2: Convert to fraction form
    890,047.40/1,335,200.70 = 290,863.40/x
  3. Step 3: Cross multiply
    890,047.40x = 1,335,200.70 × 290,863.40
  4. Step 4: Simplify right side
    890,047.40x = 388,361,015,284.38
  5. Step 5: Solve for x
    x = 388,361,015,284.38/890,047.40
  6. Step 6: Final answer
    x = 436,337.45

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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.