Home / 772,381,011.60-1,157,675,722.20-312,016,928.40

Finding the Fourth Proportional to 772,381,011.60, 1,157,675,722.20 and 312,016,928.40

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Solution

The fourth proportional to 772,381,011.60, 1,157,675,722.20 and 312,016,928.40 is: 467,663,520.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,381,011.60 : 1,157,675,722.20 = 312,016,928.40 : x
  2. Step 2: Convert to fraction form
    772,381,011.60/1,157,675,722.20 = 312,016,928.40/x
  3. Step 3: Cross multiply
    772,381,011.60x = 1,157,675,722.20 × 312,016,928.40
  4. Step 4: Simplify right side
    772,381,011.60x = 361,214,422,924,095,680
  5. Step 5: Solve for x
    x = 361,214,422,924,095,680/772,381,011.60
  6. Step 6: Final answer
    x = 467,663,520.33

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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.