Home / 779,504.86-1,075,686.84-489,271.72

Finding the Fourth Proportional to 779,504.86, 1,075,686.84 and 489,271.72

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Solution

The fourth proportional to 779,504.86, 1,075,686.84 and 489,271.72 is: 675,176.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,504.86 : 1,075,686.84 = 489,271.72 : x
  2. Step 2: Convert to fraction form
    779,504.86/1,075,686.84 = 489,271.72/x
  3. Step 3: Cross multiply
    779,504.86x = 1,075,686.84 × 489,271.72
  4. Step 4: Simplify right side
    779,504.86x = 526,303,150,388.17
  5. Step 5: Solve for x
    x = 526,303,150,388.17/779,504.86
  6. Step 6: Final answer
    x = 675,176.23

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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.