Home / 438,221,312.80-657,331,969.20-310,819,328.80

Finding the Fourth Proportional to 438,221,312.80, 657,331,969.20 and 310,819,328.80

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Solution

The fourth proportional to 438,221,312.80, 657,331,969.20 and 310,819,328.80 is: 466,228,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,221,312.80 : 657,331,969.20 = 310,819,328.80 : x
  2. Step 2: Convert to fraction form
    438,221,312.80/657,331,969.20 = 310,819,328.80/x
  3. Step 3: Cross multiply
    438,221,312.80x = 657,331,969.20 × 310,819,328.80
  4. Step 4: Simplify right side
    438,221,312.80x = 204,311,481,465,526,304
  5. Step 5: Solve for x
    x = 204,311,481,465,526,304/438,221,312.80
  6. Step 6: Final answer
    x = 466,228,993.20

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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.