Home / 433,570.40-649,966.80-386,331.20

Finding the Fourth Proportional to 433,570.40, 649,966.80 and 386,331.20

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Solution

The fourth proportional to 433,570.40, 649,966.80 and 386,331.20 is: 579,150.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    433,570.40 : 649,966.80 = 386,331.20 : x
  2. Step 2: Convert to fraction form
    433,570.40/649,966.80 = 386,331.20/x
  3. Step 3: Cross multiply
    433,570.40x = 649,966.80 × 386,331.20
  4. Step 4: Simplify right side
    433,570.40x = 251,102,453,804.16
  5. Step 5: Solve for x
    x = 251,102,453,804.16/433,570.40
  6. Step 6: Final answer
    x = 579,150.36

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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.