Home / 655,353,546.70-983,023,587.15-378,828,809.70

Finding the Fourth Proportional to 655,353,546.70, 983,023,587.15 and 378,828,809.70

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Solution

The fourth proportional to 655,353,546.70, 983,023,587.15 and 378,828,809.70 is: 568,239,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,353,546.70 : 983,023,587.15 = 378,828,809.70 : x
  2. Step 2: Convert to fraction form
    655,353,546.70/983,023,587.15 = 378,828,809.70/x
  3. Step 3: Cross multiply
    655,353,546.70x = 983,023,587.15 × 378,828,809.70
  4. Step 4: Simplify right side
    655,353,546.70x = 372,397,655,427,058,688
  5. Step 5: Solve for x
    x = 372,397,655,427,058,688/655,353,546.70
  6. Step 6: Final answer
    x = 568,239,322.58

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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.