Home / 859,152.30-1,288,716.30-290,412.15

Finding the Fourth Proportional to 859,152.30, 1,288,716.30 and 290,412.15

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Solution

The fourth proportional to 859,152.30, 1,288,716.30 and 290,412.15 is: 435,614.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,152.30 : 1,288,716.30 = 290,412.15 : x
  2. Step 2: Convert to fraction form
    859,152.30/1,288,716.30 = 290,412.15/x
  3. Step 3: Cross multiply
    859,152.30x = 1,288,716.30 × 290,412.15
  4. Step 4: Simplify right side
    859,152.30x = 374,258,871,423.05
  5. Step 5: Solve for x
    x = 374,258,871,423.05/859,152.30
  6. Step 6: Final answer
    x = 435,614.12

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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.