Home / 830,431.80-1,145,995.86-448,458.54

Finding the Fourth Proportional to 830,431.80, 1,145,995.86 and 448,458.54

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Solution

The fourth proportional to 830,431.80, 1,145,995.86 and 448,458.54 is: 618,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,431.80 : 1,145,995.86 = 448,458.54 : x
  2. Step 2: Convert to fraction form
    830,431.80/1,145,995.86 = 448,458.54/x
  3. Step 3: Cross multiply
    830,431.80x = 1,145,995.86 × 448,458.54
  4. Step 4: Simplify right side
    830,431.80x = 513,931,630,221.64
  5. Step 5: Solve for x
    x = 513,931,630,221.64/830,431.80
  6. Step 6: Final answer
    x = 618,872.77

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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.