Home / 900,498.30-1,242,718.35-513,370.97

Finding the Fourth Proportional to 900,498.30, 1,242,718.35 and 513,370.97

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Solution

The fourth proportional to 900,498.30, 1,242,718.35 and 513,370.97 is: 708,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,498.30 : 1,242,718.35 = 513,370.97 : x
  2. Step 2: Convert to fraction form
    900,498.30/1,242,718.35 = 513,370.97/x
  3. Step 3: Cross multiply
    900,498.30x = 1,242,718.35 × 513,370.97
  4. Step 4: Simplify right side
    900,498.30x = 637,975,518,562.71
  5. Step 5: Solve for x
    x = 637,975,518,562.71/900,498.30
  6. Step 6: Final answer
    x = 708,469.43

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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.