Home / 501,980,393.88-692,749,766.12-278,971,474.84

Finding the Fourth Proportional to 501,980,393.88, 692,749,766.12 and 278,971,474.84

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Solution

The fourth proportional to 501,980,393.88, 692,749,766.12 and 278,971,474.84 is: 384,989,984.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,980,393.88 : 692,749,766.12 = 278,971,474.84 : x
  2. Step 2: Convert to fraction form
    501,980,393.88/692,749,766.12 = 278,971,474.84/x
  3. Step 3: Cross multiply
    501,980,393.88x = 692,749,766.12 × 278,971,474.84
  4. Step 4: Simplify right side
    501,980,393.88x = 193,257,423,949,561,440
  5. Step 5: Solve for x
    x = 193,257,423,949,561,440/501,980,393.88
  6. Step 6: Final answer
    x = 384,989,984.28

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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.