Home / 428,848,417.90-641,649,333.39-254,065,287.88

Finding the Fourth Proportional to 428,848,417.90, 641,649,333.39 and 254,065,287.88

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Solution

The fourth proportional to 428,848,417.90, 641,649,333.39 and 254,065,287.88 is: 380,136,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,848,417.90 : 641,649,333.39 = 254,065,287.88 : x
  2. Step 2: Convert to fraction form
    428,848,417.90/641,649,333.39 = 254,065,287.88/x
  3. Step 3: Cross multiply
    428,848,417.90x = 641,649,333.39 × 254,065,287.88
  4. Step 4: Simplify right side
    428,848,417.90x = 163,020,822,605,740,448
  5. Step 5: Solve for x
    x = 163,020,822,605,740,448/428,848,417.90
  6. Step 6: Final answer
    x = 380,136,234.16

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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.