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Finding the Fourth Proportional to 572,685.85, 790,284.82 and 318,053.44

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Solution

The fourth proportional to 572,685.85, 790,284.82 and 318,053.44 is: 438,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,685.85 : 790,284.82 = 318,053.44 : x
  2. Step 2: Convert to fraction form
    572,685.85/790,284.82 = 318,053.44/x
  3. Step 3: Cross multiply
    572,685.85x = 790,284.82 × 318,053.44
  4. Step 4: Simplify right side
    572,685.85x = 251,352,805,258.52
  5. Step 5: Solve for x
    x = 251,352,805,258.52/572,685.85
  6. Step 6: Final answer
    x = 438,901.72

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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.