Home / 611,829.16-917,568.78-312,122.68

Finding the Fourth Proportional to 611,829.16, 917,568.78 and 312,122.68

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Solution

The fourth proportional to 611,829.16, 917,568.78 and 312,122.68 is: 468,094.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,829.16 : 917,568.78 = 312,122.68 : x
  2. Step 2: Convert to fraction form
    611,829.16/917,568.78 = 312,122.68/x
  3. Step 3: Cross multiply
    611,829.16x = 917,568.78 × 312,122.68
  4. Step 4: Simplify right side
    611,829.16x = 286,394,026,697.93
  5. Step 5: Solve for x
    x = 286,394,026,697.93/611,829.16
  6. Step 6: Final answer
    x = 468,094.76

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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.