Home / 402,395,791,520.85-555,307,918,700.31-219,496,878,973.10

Finding the Fourth Proportional to 402,395,791,520.85, 555,307,918,700.31 and 219,496,878,973.10

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Solution

The fourth proportional to 402,395,791,520.85, 555,307,918,700.31 and 219,496,878,973.10 is: 302,906,634,691.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,395,791,520.85 : 555,307,918,700.31 = 219,496,878,973.10 : x
  2. Step 2: Convert to fraction form
    402,395,791,520.85/555,307,918,700.31 = 219,496,878,973.10/x
  3. Step 3: Cross multiply
    402,395,791,520.85x = 555,307,918,700.31 × 219,496,878,973.10
  4. Step 4: Simplify right side
    402,395,791,520.85x = 121,888,355,023,766,020,947,968
  5. Step 5: Solve for x
    x = 121,888,355,023,766,020,947,968/402,395,791,520.85
  6. Step 6: Final answer
    x = 302,906,634,691.91

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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.