Home / 398,973,769.20-598,838,567.40-245,918,761.20

Finding the Fourth Proportional to 398,973,769.20, 598,838,567.40 and 245,918,761.20

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Solution

The fourth proportional to 398,973,769.20, 598,838,567.40 and 245,918,761.20 is: 369,111,079.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,973,769.20 : 598,838,567.40 = 245,918,761.20 : x
  2. Step 2: Convert to fraction form
    398,973,769.20/598,838,567.40 = 245,918,761.20/x
  3. Step 3: Cross multiply
    398,973,769.20x = 598,838,567.40 × 245,918,761.20
  4. Step 4: Simplify right side
    398,973,769.20x = 147,265,638,653,790,688
  5. Step 5: Solve for x
    x = 147,265,638,653,790,688/398,973,769.20
  6. Step 6: Final answer
    x = 369,111,079.53

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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.