Home / 420,736,825.80-630,806,640.30-190,816,057.80

Finding the Fourth Proportional to 420,736,825.80, 630,806,640.30 and 190,816,057.80

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Solution

The fourth proportional to 420,736,825.80, 630,806,640.30 and 190,816,057.80 is: 286,088,663.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,736,825.80 : 630,806,640.30 = 190,816,057.80 : x
  2. Step 2: Convert to fraction form
    420,736,825.80/630,806,640.30 = 190,816,057.80/x
  3. Step 3: Cross multiply
    420,736,825.80x = 630,806,640.30 × 190,816,057.80
  4. Step 4: Simplify right side
    420,736,825.80x = 120,368,036,336,108,608
  5. Step 5: Solve for x
    x = 120,368,036,336,108,608/420,736,825.80
  6. Step 6: Final answer
    x = 286,088,663.87

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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.