Home / 678,149,213,130.72-1,017,422,316,947.50-218,674,642,476.72

Finding the Fourth Proportional to 678,149,213,130.72, 1,017,422,316,947.50 and 218,674,642,476.72

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Solution

The fourth proportional to 678,149,213,130.72, 1,017,422,316,947.50 and 218,674,642,476.72 is: 328,075,970,742.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,149,213,130.72 : 1,017,422,316,947.50 = 218,674,642,476.72 : x
  2. Step 2: Convert to fraction form
    678,149,213,130.72/1,017,422,316,947.50 = 218,674,642,476.72/x
  3. Step 3: Cross multiply
    678,149,213,130.72x = 1,017,422,316,947.50 × 218,674,642,476.72
  4. Step 4: Simplify right side
    678,149,213,130.72x = 222,484,461,406,330,661,371,904
  5. Step 5: Solve for x
    x = 222,484,461,406,330,661,371,904/678,149,213,130.72
  6. Step 6: Final answer
    x = 328,075,970,742.81

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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.