Home / 811,971,589.86-1,120,531,543.47-440,698,071.78

Finding the Fourth Proportional to 811,971,589.86, 1,120,531,543.47 and 440,698,071.78

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Solution

The fourth proportional to 811,971,589.86, 1,120,531,543.47 and 440,698,071.78 is: 608,169,173.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,971,589.86 : 1,120,531,543.47 = 440,698,071.78 : x
  2. Step 2: Convert to fraction form
    811,971,589.86/1,120,531,543.47 = 440,698,071.78/x
  3. Step 3: Cross multiply
    811,971,589.86x = 1,120,531,543.47 × 440,698,071.78
  4. Step 4: Simplify right side
    811,971,589.86x = 493,816,090,575,896,256
  5. Step 5: Solve for x
    x = 493,816,090,575,896,256/811,971,589.86
  6. Step 6: Final answer
    x = 608,169,173.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.