Home / 779,511.60-1,075,695.12-489,277.80

Finding the Fourth Proportional to 779,511.60, 1,075,695.12 and 489,277.80

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Solution

The fourth proportional to 779,511.60, 1,075,695.12 and 489,277.80 is: 675,183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,511.60 : 1,075,695.12 = 489,277.80 : x
  2. Step 2: Convert to fraction form
    779,511.60/1,075,695.12 = 489,277.80/x
  3. Step 3: Cross multiply
    779,511.60x = 1,075,695.12 × 489,277.80
  4. Step 4: Simplify right side
    779,511.60x = 526,313,741,784.34
  5. Step 5: Solve for x
    x = 526,313,741,784.34/779,511.60
  6. Step 6: Final answer
    x = 675,183.98

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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.