Home / 900,225.30-1,242,463.68-518,473.11

Finding the Fourth Proportional to 900,225.30, 1,242,463.68 and 518,473.11

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Solution

The fourth proportional to 900,225.30, 1,242,463.68 and 518,473.11 is: 715,580.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,225.30 : 1,242,463.68 = 518,473.11 : x
  2. Step 2: Convert to fraction form
    900,225.30/1,242,463.68 = 518,473.11/x
  3. Step 3: Cross multiply
    900,225.30x = 1,242,463.68 × 518,473.11
  4. Step 4: Simplify right side
    900,225.30x = 644,184,008,231.65
  5. Step 5: Solve for x
    x = 644,184,008,231.65/900,225.30
  6. Step 6: Final answer
    x = 715,580.88

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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.