Home / 621,712,488.54-857,653,502.82-370,639,966.44

Finding the Fourth Proportional to 621,712,488.54, 857,653,502.82 and 370,639,966.44

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Solution

The fourth proportional to 621,712,488.54, 857,653,502.82 and 370,639,966.44 is: 511,298,504.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,712,488.54 : 857,653,502.82 = 370,639,966.44 : x
  2. Step 2: Convert to fraction form
    621,712,488.54/857,653,502.82 = 370,639,966.44/x
  3. Step 3: Cross multiply
    621,712,488.54x = 857,653,502.82 × 370,639,966.44
  4. Step 4: Simplify right side
    621,712,488.54x = 317,880,665,502,353,280
  5. Step 5: Solve for x
    x = 317,880,665,502,353,280/621,712,488.54
  6. Step 6: Final answer
    x = 511,298,504.31

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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.