Home / 811,971,563.77-1,120,531,507.59-440,698,045.69

Finding the Fourth Proportional to 811,971,563.77, 1,120,531,507.59 and 440,698,045.69

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Solution

The fourth proportional to 811,971,563.77, 1,120,531,507.59 and 440,698,045.69 is: 608,169,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,971,563.77 : 1,120,531,507.59 = 440,698,045.69 : x
  2. Step 2: Convert to fraction form
    811,971,563.77/1,120,531,507.59 = 440,698,045.69/x
  3. Step 3: Cross multiply
    811,971,563.77x = 1,120,531,507.59 × 440,698,045.69
  4. Step 4: Simplify right side
    811,971,563.77x = 493,816,045,528,982,336
  5. Step 5: Solve for x
    x = 493,816,045,528,982,336/811,971,563.77
  6. Step 6: Final answer
    x = 608,169,137.40

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Double scale
Find fourth proportional to 811,971,564.77, 1,120,531,508.97 and 440,698,046.69
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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.