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Finding the Fourth Proportional to 774,578.54, 1,069,018.74 and 435,046.82

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Solution

The fourth proportional to 774,578.54, 1,069,018.74 and 435,046.82 is: 600,420.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,578.54 : 1,069,018.74 = 435,046.82 : x
  2. Step 2: Convert to fraction form
    774,578.54/1,069,018.74 = 435,046.82/x
  3. Step 3: Cross multiply
    774,578.54x = 1,069,018.74 × 435,046.82
  4. Step 4: Simplify right side
    774,578.54x = 465,073,203,357.41
  5. Step 5: Solve for x
    x = 465,073,203,357.41/774,578.54
  6. Step 6: Final answer
    x = 600,420.98

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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.