Home / 807,302,656.80-1,210,890,999.60-315,920,498.40

Finding the Fourth Proportional to 807,302,656.80, 1,210,890,999.60 and 315,920,498.40

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Solution

The fourth proportional to 807,302,656.80, 1,210,890,999.60 and 315,920,498.40 is: 473,856,099.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,302,656.80 : 1,210,890,999.60 = 315,920,498.40 : x
  2. Step 2: Convert to fraction form
    807,302,656.80/1,210,890,999.60 = 315,920,498.40/x
  3. Step 3: Cross multiply
    807,302,656.80x = 1,210,890,999.60 × 315,920,498.40
  4. Step 4: Simplify right side
    807,302,656.80x = 382,545,288,101,706,112
  5. Step 5: Solve for x
    x = 382,545,288,101,706,112/807,302,656.80
  6. Step 6: Final answer
    x = 473,856,099.54

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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.