Home / 428,864.16-591,746.40-259,106.88

Finding the Fourth Proportional to 428,864.16, 591,746.40 and 259,106.88

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Solution

The fourth proportional to 428,864.16, 591,746.40 and 259,106.88 is: 357,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,864.16 : 591,746.40 = 259,106.88 : x
  2. Step 2: Convert to fraction form
    428,864.16/591,746.40 = 259,106.88/x
  3. Step 3: Cross multiply
    428,864.16x = 591,746.40 × 259,106.88
  4. Step 4: Simplify right side
    428,864.16x = 153,325,563,455.23
  5. Step 5: Solve for x
    x = 153,325,563,455.23/428,864.16
  6. Step 6: Final answer
    x = 357,515.45

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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.