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Finding the Fourth Proportional to 940,810.80, 1,411,345.80 and 408,316.80

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Solution

The fourth proportional to 940,810.80, 1,411,345.80 and 408,316.80 is: 612,531.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    940,810.80 : 1,411,345.80 = 408,316.80 : x
  2. Step 2: Convert to fraction form
    940,810.80/1,411,345.80 = 408,316.80/x
  3. Step 3: Cross multiply
    940,810.80x = 1,411,345.80 × 408,316.80
  4. Step 4: Simplify right side
    940,810.80x = 576,276,200,749.44
  5. Step 5: Solve for x
    x = 576,276,200,749.44/940,810.80
  6. Step 6: Final answer
    x = 612,531.45

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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.