Home / 1,315,084,999.68-1,814,129,239.68-813,133,332.72

Finding the Fourth Proportional to 1,315,084,999.68, 1,814,129,239.68 and 813,133,332.72

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Solution

The fourth proportional to 1,315,084,999.68, 1,814,129,239.68 and 813,133,332.72 is: 1,121,698,563.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,084,999.68 : 1,814,129,239.68 = 813,133,332.72 : x
  2. Step 2: Convert to fraction form
    1,315,084,999.68/1,814,129,239.68 = 813,133,332.72/x
  3. Step 3: Cross multiply
    1,315,084,999.68x = 1,814,129,239.68 × 813,133,332.72
  4. Step 4: Simplify right side
    1,315,084,999.68x = 1,475,128,954,645,798,144
  5. Step 5: Solve for x
    x = 1,475,128,954,645,798,144/1,315,084,999.68
  6. Step 6: Final answer
    x = 1,121,698,563.21

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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.