Home / 775,756.12-1,070,848.38-489,219.16

Finding the Fourth Proportional to 775,756.12, 1,070,848.38 and 489,219.16

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Solution

The fourth proportional to 775,756.12, 1,070,848.38 and 489,219.16 is: 675,314.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,756.12 : 1,070,848.38 = 489,219.16 : x
  2. Step 2: Convert to fraction form
    775,756.12/1,070,848.38 = 489,219.16/x
  3. Step 3: Cross multiply
    775,756.12x = 1,070,848.38 × 489,219.16
  4. Step 4: Simplify right side
    775,756.12x = 523,879,544,950.96
  5. Step 5: Solve for x
    x = 523,879,544,950.96/775,756.12
  6. Step 6: Final answer
    x = 675,314.74

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Double scale
Find fourth proportional to 775,757.12, 1,070,849.76 and 489,220.16
Similar ratio
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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.