Home / 900,006.72-1,242,008.88-492,110.64

Finding the Fourth Proportional to 900,006.72, 1,242,008.88 and 492,110.64

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Solution

The fourth proportional to 900,006.72, 1,242,008.88 and 492,110.64 is: 679,112.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,006.72 : 1,242,008.88 = 492,110.64 : x
  2. Step 2: Convert to fraction form
    900,006.72/1,242,008.88 = 492,110.64/x
  3. Step 3: Cross multiply
    900,006.72x = 1,242,008.88 × 492,110.64
  4. Step 4: Simplify right side
    900,006.72x = 611,205,784,822.48
  5. Step 5: Solve for x
    x = 611,205,784,822.48/900,006.72
  6. Step 6: Final answer
    x = 679,112.47

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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.