Home / 763,689.51-1,145,537.51-258,253.16

Finding the Fourth Proportional to 763,689.51, 1,145,537.51 and 258,253.16

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Solution

The fourth proportional to 763,689.51, 1,145,537.51 and 258,253.16 is: 387,380.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,689.51 : 1,145,537.51 = 258,253.16 : x
  2. Step 2: Convert to fraction form
    763,689.51/1,145,537.51 = 258,253.16/x
  3. Step 3: Cross multiply
    763,689.51x = 1,145,537.51 × 258,253.16
  4. Step 4: Simplify right side
    763,689.51x = 295,838,674,837.08
  5. Step 5: Solve for x
    x = 295,838,674,837.08/763,689.51
  6. Step 6: Final answer
    x = 387,380.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.