Home / 986,455.80-1,479,683.70-355,390.20

Finding the Fourth Proportional to 986,455.80, 1,479,683.70 and 355,390.20

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Solution

The fourth proportional to 986,455.80, 1,479,683.70 and 355,390.20 is: 533,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,455.80 : 1,479,683.70 = 355,390.20 : x
  2. Step 2: Convert to fraction form
    986,455.80/1,479,683.70 = 355,390.20/x
  3. Step 3: Cross multiply
    986,455.80x = 1,479,683.70 × 355,390.20
  4. Step 4: Simplify right side
    986,455.80x = 525,865,086,079.74
  5. Step 5: Solve for x
    x = 525,865,086,079.74/986,455.80
  6. Step 6: Final answer
    x = 533,085.30

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.