Home / 805,721,397.54-1,208,512,866.07-490,505,619.72

Finding the Fourth Proportional to 805,721,397.54, 1,208,512,866.07 and 490,505,619.72

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Solution

The fourth proportional to 805,721,397.54, 1,208,512,866.07 and 490,505,619.72 is: 735,716,283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,721,397.54 : 1,208,512,866.07 = 490,505,619.72 : x
  2. Step 2: Convert to fraction form
    805,721,397.54/1,208,512,866.07 = 490,505,619.72/x
  3. Step 3: Cross multiply
    805,721,397.54x = 1,208,512,866.07 × 490,505,619.72
  4. Step 4: Simplify right side
    805,721,397.54x = 592,782,352,311,258,752
  5. Step 5: Solve for x
    x = 592,782,352,311,258,752/805,721,397.54
  6. Step 6: Final answer
    x = 735,716,283.72

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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.