Home / 285,336,626,940.80-428,004,940,411.20-86,589,597,219.20

Finding the Fourth Proportional to 285,336,626,940.80, 428,004,940,411.20 and 86,589,597,219.20

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Solution

The fourth proportional to 285,336,626,940.80, 428,004,940,411.20 and 86,589,597,219.20 is: 129,884,395,828.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,336,626,940.80 : 428,004,940,411.20 = 86,589,597,219.20 : x
  2. Step 2: Convert to fraction form
    285,336,626,940.80/428,004,940,411.20 = 86,589,597,219.20/x
  3. Step 3: Cross multiply
    285,336,626,940.80x = 428,004,940,411.20 × 86,589,597,219.20
  4. Step 4: Simplify right side
    285,336,626,940.80x = 37,060,775,398,033,506,435,072
  5. Step 5: Solve for x
    x = 37,060,775,398,033,506,435,072/285,336,626,940.80
  6. Step 6: Final answer
    x = 129,884,395,828.80

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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.