Home / 900,990.25-1,243,243.82-538,337.45

Finding the Fourth Proportional to 900,990.25, 1,243,243.82 and 538,337.45

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Solution

The fourth proportional to 900,990.25, 1,243,243.82 and 538,337.45 is: 742,832.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,990.25 : 1,243,243.82 = 538,337.45 : x
  2. Step 2: Convert to fraction form
    900,990.25/1,243,243.82 = 538,337.45/x
  3. Step 3: Cross multiply
    900,990.25x = 1,243,243.82 × 538,337.45
  4. Step 4: Simplify right side
    900,990.25x = 669,284,712,241.01
  5. Step 5: Solve for x
    x = 669,284,712,241.01/900,990.25
  6. Step 6: Final answer
    x = 742,832.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.