Home / 856,965,161.40-1,182,612,684.78-465,824,585.40

Finding the Fourth Proportional to 856,965,161.40, 1,182,612,684.78 and 465,824,585.40

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Solution

The fourth proportional to 856,965,161.40, 1,182,612,684.78 and 465,824,585.40 is: 642,838,342.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,965,161.40 : 1,182,612,684.78 = 465,824,585.40 : x
  2. Step 2: Convert to fraction form
    856,965,161.40/1,182,612,684.78 = 465,824,585.40/x
  3. Step 3: Cross multiply
    856,965,161.40x = 1,182,612,684.78 × 465,824,585.40
  4. Step 4: Simplify right side
    856,965,161.40x = 550,890,063,576,424,320
  5. Step 5: Solve for x
    x = 550,890,063,576,424,320/856,965,161.40
  6. Step 6: Final answer
    x = 642,838,342.08

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1.5x scale

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.