Home / 431,456,887.40-647,185,331.10-249,610,461.80

Finding the Fourth Proportional to 431,456,887.40, 647,185,331.10 and 249,610,461.80

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Solution

The fourth proportional to 431,456,887.40, 647,185,331.10 and 249,610,461.80 is: 374,415,692.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,456,887.40 : 647,185,331.10 = 249,610,461.80 : x
  2. Step 2: Convert to fraction form
    431,456,887.40/647,185,331.10 = 249,610,461.80/x
  3. Step 3: Cross multiply
    431,456,887.40x = 647,185,331.10 × 249,610,461.80
  4. Step 4: Simplify right side
    431,456,887.40x = 161,544,229,366,056,928
  5. Step 5: Solve for x
    x = 161,544,229,366,056,928/431,456,887.40
  6. Step 6: Final answer
    x = 374,415,692.70

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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.