Home / 854,034.24-1,178,612.64-491,513.28

Finding the Fourth Proportional to 854,034.24, 1,178,612.64 and 491,513.28

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Solution

The fourth proportional to 854,034.24, 1,178,612.64 and 491,513.28 is: 678,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,034.24 : 1,178,612.64 = 491,513.28 : x
  2. Step 2: Convert to fraction form
    854,034.24/1,178,612.64 = 491,513.28/x
  3. Step 3: Cross multiply
    854,034.24x = 1,178,612.64 × 491,513.28
  4. Step 4: Simplify right side
    854,034.24x = 579,303,764,535.86
  5. Step 5: Solve for x
    x = 579,303,764,535.86/854,034.24
  6. Step 6: Final answer
    x = 678,314.45

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Double scale
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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.