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Finding the Fourth Proportional to 855,911.76, 1,181,143.76 and 473,930.32

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Solution

The fourth proportional to 855,911.76, 1,181,143.76 and 473,930.32 is: 654,015.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,911.76 : 1,181,143.76 = 473,930.32 : x
  2. Step 2: Convert to fraction form
    855,911.76/1,181,143.76 = 473,930.32/x
  3. Step 3: Cross multiply
    855,911.76x = 1,181,143.76 × 473,930.32
  4. Step 4: Simplify right side
    855,911.76x = 559,779,840,142.80
  5. Step 5: Solve for x
    x = 559,779,840,142.80/855,911.76
  6. Step 6: Final answer
    x = 654,015.83

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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.