Home / 390,141,624.43-537,874,615.49-309,939,722.36

Finding the Fourth Proportional to 390,141,624.43, 537,874,615.49 and 309,939,722.36

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Solution

The fourth proportional to 390,141,624.43, 537,874,615.49 and 309,939,722.36 is: 427,303,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,141,624.43 : 537,874,615.49 = 309,939,722.36 : x
  2. Step 2: Convert to fraction form
    390,141,624.43/537,874,615.49 = 309,939,722.36/x
  3. Step 3: Cross multiply
    390,141,624.43x = 537,874,615.49 × 309,939,722.36
  4. Step 4: Simplify right side
    390,141,624.43x = 166,708,708,987,240,320
  5. Step 5: Solve for x
    x = 166,708,708,987,240,320/390,141,624.43
  6. Step 6: Final answer
    x = 427,303,057.52

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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.