Home / 857,950,560.40-1,287,261,763.80-312,747,206.80

Finding the Fourth Proportional to 857,950,560.40, 1,287,261,763.80 and 312,747,206.80

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Solution

The fourth proportional to 857,950,560.40, 1,287,261,763.80 and 312,747,206.80 is: 469,243,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,950,560.40 : 1,287,261,763.80 = 312,747,206.80 : x
  2. Step 2: Convert to fraction form
    857,950,560.40/1,287,261,763.80 = 312,747,206.80/x
  3. Step 3: Cross multiply
    857,950,560.40x = 1,287,261,763.80 × 312,747,206.80
  4. Step 4: Simplify right side
    857,950,560.40x = 402,587,521,048,891,328
  5. Step 5: Solve for x
    x = 402,587,521,048,891,328/857,950,560.40
  6. Step 6: Final answer
    x = 469,243,263.69

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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.