Home / 865,405.33-1,194,331.27-478,296.34

Finding the Fourth Proportional to 865,405.33, 1,194,331.27 and 478,296.34

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Solution

The fourth proportional to 865,405.33, 1,194,331.27 and 478,296.34 is: 660,088.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,405.33 : 1,194,331.27 = 478,296.34 : x
  2. Step 2: Convert to fraction form
    865,405.33/1,194,331.27 = 478,296.34/x
  3. Step 3: Cross multiply
    865,405.33x = 1,194,331.27 × 478,296.34
  4. Step 4: Simplify right side
    865,405.33x = 571,244,271,903.79
  5. Step 5: Solve for x
    x = 571,244,271,903.79/865,405.33
  6. Step 6: Final answer
    x = 660,088.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.