Home / 685,909.80-1,028,864.70-591,431.40

Finding the Fourth Proportional to 685,909.80, 1,028,864.70 and 591,431.40

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Solution

The fourth proportional to 685,909.80, 1,028,864.70 and 591,431.40 is: 887,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,909.80 : 1,028,864.70 = 591,431.40 : x
  2. Step 2: Convert to fraction form
    685,909.80/1,028,864.70 = 591,431.40/x
  3. Step 3: Cross multiply
    685,909.80x = 1,028,864.70 × 591,431.40
  4. Step 4: Simplify right side
    685,909.80x = 608,502,889,931.58
  5. Step 5: Solve for x
    x = 608,502,889,931.58/685,909.80
  6. Step 6: Final answer
    x = 887,147.10

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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.