Home / 917,114,717,679.45-1,265,622,133,153.90-505,574,155,447.80

Finding the Fourth Proportional to 917,114,717,679.45, 1,265,622,133,153.90 and 505,574,155,447.80

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Solution

The fourth proportional to 917,114,717,679.45, 1,265,622,133,153.90 and 505,574,155,447.80 is: 697,694,441,873.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,114,717,679.45 : 1,265,622,133,153.90 = 505,574,155,447.80 : x
  2. Step 2: Convert to fraction form
    917,114,717,679.45/1,265,622,133,153.90 = 505,574,155,447.80/x
  3. Step 3: Cross multiply
    917,114,717,679.45x = 1,265,622,133,153.90 × 505,574,155,447.80
  4. Step 4: Simplify right side
    917,114,717,679.45x = 639,865,841,085,326,062,256,128
  5. Step 5: Solve for x
    x = 639,865,841,085,326,062,256,128/917,114,717,679.45
  6. Step 6: Final answer
    x = 697,694,441,873.49

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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.