Home / 515,809,759.20-773,714,638.80-342,725,330.40

Finding the Fourth Proportional to 515,809,759.20, 773,714,638.80 and 342,725,330.40

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Solution

The fourth proportional to 515,809,759.20, 773,714,638.80 and 342,725,330.40 is: 514,087,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,809,759.20 : 773,714,638.80 = 342,725,330.40 : x
  2. Step 2: Convert to fraction form
    515,809,759.20/773,714,638.80 = 342,725,330.40/x
  3. Step 3: Cross multiply
    515,809,759.20x = 773,714,638.80 × 342,725,330.40
  4. Step 4: Simplify right side
    515,809,759.20x = 265,171,605,218,046,624
  5. Step 5: Solve for x
    x = 265,171,605,218,046,624/515,809,759.20
  6. Step 6: Final answer
    x = 514,087,995.60

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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.