Home / 628,758,986.80-943,138,480.20-399,176,474.80

Finding the Fourth Proportional to 628,758,986.80, 943,138,480.20 and 399,176,474.80

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Solution

The fourth proportional to 628,758,986.80, 943,138,480.20 and 399,176,474.80 is: 598,764,712.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,758,986.80 : 943,138,480.20 = 399,176,474.80 : x
  2. Step 2: Convert to fraction form
    628,758,986.80/943,138,480.20 = 399,176,474.80/x
  3. Step 3: Cross multiply
    628,758,986.80x = 943,138,480.20 × 399,176,474.80
  4. Step 4: Simplify right side
    628,758,986.80x = 376,478,693,774,465,600
  5. Step 5: Solve for x
    x = 376,478,693,774,465,600/628,758,986.80
  6. Step 6: Final answer
    x = 598,764,712.20

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1.5x scale

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.