Home / 857,950,006.40-1,287,260,932.80-312,746,652.80

Finding the Fourth Proportional to 857,950,006.40, 1,287,260,932.80 and 312,746,652.80

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Solution

The fourth proportional to 857,950,006.40, 1,287,260,932.80 and 312,746,652.80 is: 469,242,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,950,006.40 : 1,287,260,932.80 = 312,746,652.80 : x
  2. Step 2: Convert to fraction form
    857,950,006.40/1,287,260,932.80 = 312,746,652.80/x
  3. Step 3: Cross multiply
    857,950,006.40x = 1,287,260,932.80 × 312,746,652.80
  4. Step 4: Simplify right side
    857,950,006.40x = 402,586,548,013,405,760
  5. Step 5: Solve for x
    x = 402,586,548,013,405,760/857,950,006.40
  6. Step 6: Final answer
    x = 469,242,432.55

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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.