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Finding the Fourth Proportional to 557,317.39, 769,097.96 and 315,646.67

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Solution

The fourth proportional to 557,317.39, 769,097.96 and 315,646.67 is: 435,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,317.39 : 769,097.96 = 315,646.67 : x
  2. Step 2: Convert to fraction form
    557,317.39/769,097.96 = 315,646.67/x
  3. Step 3: Cross multiply
    557,317.39x = 769,097.96 × 315,646.67
  4. Step 4: Simplify right side
    557,317.39x = 242,763,212,393.74
  5. Step 5: Solve for x
    x = 242,763,212,393.74/557,317.39
  6. Step 6: Final answer
    x = 435,592.39

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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.