Home / 727,466,993.36-1,003,904,852.88-392,939,513.76

Finding the Fourth Proportional to 727,466,993.36, 1,003,904,852.88 and 392,939,513.76

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Solution

The fourth proportional to 727,466,993.36, 1,003,904,852.88 and 392,939,513.76 is: 542,256,746.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,466,993.36 : 1,003,904,852.88 = 392,939,513.76 : x
  2. Step 2: Convert to fraction form
    727,466,993.36/1,003,904,852.88 = 392,939,513.76/x
  3. Step 3: Cross multiply
    727,466,993.36x = 1,003,904,852.88 × 392,939,513.76
  4. Step 4: Simplify right side
    727,466,993.36x = 394,473,884,751,971,520
  5. Step 5: Solve for x
    x = 394,473,884,751,971,520/727,466,993.36
  6. Step 6: Final answer
    x = 542,256,746.15

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1.5x scale

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.