Home / 620,083,028.40-930,124,542.60-310,146,637.20

Finding the Fourth Proportional to 620,083,028.40, 930,124,542.60 and 310,146,637.20

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Solution

The fourth proportional to 620,083,028.40, 930,124,542.60 and 310,146,637.20 is: 465,219,955.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,083,028.40 : 930,124,542.60 = 310,146,637.20 : x
  2. Step 2: Convert to fraction form
    620,083,028.40/930,124,542.60 = 310,146,637.20/x
  3. Step 3: Cross multiply
    620,083,028.40x = 930,124,542.60 × 310,146,637.20
  4. Step 4: Simplify right side
    620,083,028.40x = 288,474,999,064,578,112
  5. Step 5: Solve for x
    x = 288,474,999,064,578,112/620,083,028.40
  6. Step 6: Final answer
    x = 465,219,955.80

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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.