Home / 424,980,833.91-636,987,689.78-258,617,417.51

Finding the Fourth Proportional to 424,980,833.91, 636,987,689.78 and 258,617,417.51

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Solution

The fourth proportional to 424,980,833.91, 636,987,689.78 and 258,617,417.51 is: 387,631,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,980,833.91 : 636,987,689.78 = 258,617,417.51 : x
  2. Step 2: Convert to fraction form
    424,980,833.91/636,987,689.78 = 258,617,417.51/x
  3. Step 3: Cross multiply
    424,980,833.91x = 636,987,689.78 × 258,617,417.51
  4. Step 4: Simplify right side
    424,980,833.91x = 164,736,111,312,086,592
  5. Step 5: Solve for x
    x = 164,736,111,312,086,592/424,980,833.91
  6. Step 6: Final answer
    x = 387,631,860.47

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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.