Home / 542,749,209.81-812,069,357.04-321,539,276.45

Finding the Fourth Proportional to 542,749,209.81, 812,069,357.04 and 321,539,276.45

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Solution

The fourth proportional to 542,749,209.81, 812,069,357.04 and 321,539,276.45 is: 481,091,798.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,749,209.81 : 812,069,357.04 = 321,539,276.45 : x
  2. Step 2: Convert to fraction form
    542,749,209.81/812,069,357.04 = 321,539,276.45/x
  3. Step 3: Cross multiply
    542,749,209.81x = 812,069,357.04 × 321,539,276.45
  4. Step 4: Simplify right side
    542,749,209.81x = 261,112,193,485,797,952
  5. Step 5: Solve for x
    x = 261,112,193,485,797,952/542,749,209.81
  6. Step 6: Final answer
    x = 481,091,798.51

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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.