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Finding the Fourth Proportional to 572,336.56, 790,036.44 and 491,439.20

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Solution

The fourth proportional to 572,336.56, 790,036.44 and 491,439.20 is: 678,368.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,336.56 : 790,036.44 = 491,439.20 : x
  2. Step 2: Convert to fraction form
    572,336.56/790,036.44 = 491,439.20/x
  3. Step 3: Cross multiply
    572,336.56x = 790,036.44 × 491,439.20
  4. Step 4: Simplify right side
    572,336.56x = 388,254,876,044.45
  5. Step 5: Solve for x
    x = 388,254,876,044.45/572,336.56
  6. Step 6: Final answer
    x = 678,368.12

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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.