Home / 686,661.64-1,029,639.54-402,911.59

Finding the Fourth Proportional to 686,661.64, 1,029,639.54 and 402,911.59

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Solution

The fourth proportional to 686,661.64, 1,029,639.54 and 402,911.59 is: 604,160.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,661.64 : 1,029,639.54 = 402,911.59 : x
  2. Step 2: Convert to fraction form
    686,661.64/1,029,639.54 = 402,911.59/x
  3. Step 3: Cross multiply
    686,661.64x = 1,029,639.54 × 402,911.59
  4. Step 4: Simplify right side
    686,661.64x = 414,853,699,040.07
  5. Step 5: Solve for x
    x = 414,853,699,040.07/686,661.64
  6. Step 6: Final answer
    x = 604,160.30

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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.