Home / 718,890,638,382-992,100,265,924.88-398,106,473,490

Finding the Fourth Proportional to 718,890,638,382, 992,100,265,924.88 and 398,106,473,490

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Solution

The fourth proportional to 718,890,638,382, 992,100,265,924.88 and 398,106,473,490 is: 549,404,202,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,382 : 992,100,265,924.88 = 398,106,473,490 : x
  2. Step 2: Convert to fraction form
    718,890,638,382/992,100,265,924.88 = 398,106,473,490/x
  3. Step 3: Cross multiply
    718,890,638,382x = 992,100,265,924.88 × 398,106,473,490
  4. Step 4: Simplify right side
    718,890,638,382x = 394,961,538,215,845,161,861,120
  5. Step 5: Solve for x
    x = 394,961,538,215,845,161,861,120/718,890,638,382
  6. Step 6: Final answer
    x = 549,404,202,988.07

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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.