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Finding the Fourth Proportional to 936,145.80, 1,404,218.70 and 794,428.20

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Solution

The fourth proportional to 936,145.80, 1,404,218.70 and 794,428.20 is: 1,191,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,145.80 : 1,404,218.70 = 794,428.20 : x
  2. Step 2: Convert to fraction form
    936,145.80/1,404,218.70 = 794,428.20/x
  3. Step 3: Cross multiply
    936,145.80x = 1,404,218.70 × 794,428.20
  4. Step 4: Simplify right side
    936,145.80x = 1,115,550,934,247.34
  5. Step 5: Solve for x
    x = 1,115,550,934,247.34/936,145.80
  6. Step 6: Final answer
    x = 1,191,642.30

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Double scale
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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.