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Finding the Fourth Proportional to 572,653.80, 858,980.70 and 515,573.10

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Solution

The fourth proportional to 572,653.80, 858,980.70 and 515,573.10 is: 773,359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,653.80 : 858,980.70 = 515,573.10 : x
  2. Step 2: Convert to fraction form
    572,653.80/858,980.70 = 515,573.10/x
  3. Step 3: Cross multiply
    572,653.80x = 858,980.70 × 515,573.10
  4. Step 4: Simplify right side
    572,653.80x = 442,867,342,339.17
  5. Step 5: Solve for x
    x = 442,867,342,339.17/572,653.80
  6. Step 6: Final answer
    x = 773,359.65

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Double scale
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Similar ratio
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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.