Home / 718,890,638,374.90-992,100,265,915.08-398,106,473,482.92

Finding the Fourth Proportional to 718,890,638,374.90, 992,100,265,915.08 and 398,106,473,482.92

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Solution

The fourth proportional to 718,890,638,374.90, 992,100,265,915.08 and 398,106,473,482.92 is: 549,404,202,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,890,638,374.90 : 992,100,265,915.08 = 398,106,473,482.92 : x
  2. Step 2: Convert to fraction form
    718,890,638,374.90/992,100,265,915.08 = 398,106,473,482.92/x
  3. Step 3: Cross multiply
    718,890,638,374.90x = 992,100,265,915.08 × 398,106,473,482.92
  4. Step 4: Simplify right side
    718,890,638,374.90x = 394,961,538,204,919,637,475,328
  5. Step 5: Solve for x
    x = 394,961,538,204,919,637,475,328/718,890,638,374.90
  6. Step 6: Final answer
    x = 549,404,202,978.30

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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.