Home / 1,048,403,999.80-1,572,605,999.70-640,257,311.80

Finding the Fourth Proportional to 1,048,403,999.80, 1,572,605,999.70 and 640,257,311.80

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Solution

The fourth proportional to 1,048,403,999.80, 1,572,605,999.70 and 640,257,311.80 is: 960,385,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048,403,999.80 : 1,572,605,999.70 = 640,257,311.80 : x
  2. Step 2: Convert to fraction form
    1,048,403,999.80/1,572,605,999.70 = 640,257,311.80/x
  3. Step 3: Cross multiply
    1,048,403,999.80x = 1,572,605,999.70 × 640,257,311.80
  4. Step 4: Simplify right side
    1,048,403,999.80x = 1,006,872,489,888,473,600
  5. Step 5: Solve for x
    x = 1,006,872,489,888,473,600/1,048,403,999.80
  6. Step 6: Final answer
    x = 960,385,967.70

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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.