Home / 890,394.40-1,228,737.36-487,985.44

Finding the Fourth Proportional to 890,394.40, 1,228,737.36 and 487,985.44

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Solution

The fourth proportional to 890,394.40, 1,228,737.36 and 487,985.44 is: 673,416.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,394.40 : 1,228,737.36 = 487,985.44 : x
  2. Step 2: Convert to fraction form
    890,394.40/1,228,737.36 = 487,985.44/x
  3. Step 3: Cross multiply
    890,394.40x = 1,228,737.36 × 487,985.44
  4. Step 4: Simplify right side
    890,394.40x = 599,605,941,264.04
  5. Step 5: Solve for x
    x = 599,605,941,264.04/890,394.40
  6. Step 6: Final answer
    x = 673,416.12

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