Home / 900,680.90-1,242,816.89-538,027.78

Finding the Fourth Proportional to 900,680.90, 1,242,816.89 and 538,027.78

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Solution

The fourth proportional to 900,680.90, 1,242,816.89 and 538,027.78 is: 742,405.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,680.90 : 1,242,816.89 = 538,027.78 : x
  2. Step 2: Convert to fraction form
    900,680.90/1,242,816.89 = 538,027.78/x
  3. Step 3: Cross multiply
    900,680.90x = 1,242,816.89 × 538,027.78
  4. Step 4: Simplify right side
    900,680.90x = 668,670,008,493.63
  5. Step 5: Solve for x
    x = 668,670,008,493.63/900,680.90
  6. Step 6: Final answer
    x = 742,405.00

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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.