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Finding the Fourth Proportional to 886,998.90, 1,330,498.35 and 354,901.80

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Solution

The fourth proportional to 886,998.90, 1,330,498.35 and 354,901.80 is: 532,352.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,998.90 : 1,330,498.35 = 354,901.80 : x
  2. Step 2: Convert to fraction form
    886,998.90/1,330,498.35 = 354,901.80/x
  3. Step 3: Cross multiply
    886,998.90x = 1,330,498.35 × 354,901.80
  4. Step 4: Simplify right side
    886,998.90x = 472,196,259,312.03
  5. Step 5: Solve for x
    x = 472,196,259,312.03/886,998.90
  6. Step 6: Final answer
    x = 532,352.70

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Double scale
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Similar ratio
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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.