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Finding the Fourth Proportional to 557,287.73, 769,056.98 and 315,570.23

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Solution

The fourth proportional to 557,287.73, 769,056.98 and 315,570.23 is: 435,486.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,287.73 : 769,056.98 = 315,570.23 : x
  2. Step 2: Convert to fraction form
    557,287.73/769,056.98 = 315,570.23/x
  3. Step 3: Cross multiply
    557,287.73x = 769,056.98 × 315,570.23
  4. Step 4: Simplify right side
    557,287.73x = 242,691,482,638.57
  5. Step 5: Solve for x
    x = 242,691,482,638.57/557,287.73
  6. Step 6: Final answer
    x = 435,486.86

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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.