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Finding the Fourth Proportional to 660,794.40, 911,907.60 and 374,307.36

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Solution

The fourth proportional to 660,794.40, 911,907.60 and 374,307.36 is: 516,550.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,794.40 : 911,907.60 = 374,307.36 : x
  2. Step 2: Convert to fraction form
    660,794.40/911,907.60 = 374,307.36/x
  3. Step 3: Cross multiply
    660,794.40x = 911,907.60 × 374,307.36
  4. Step 4: Simplify right side
    660,794.40x = 341,333,726,319.94
  5. Step 5: Solve for x
    x = 341,333,726,319.94/660,794.40
  6. Step 6: Final answer
    x = 516,550.57

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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.