Home / 686,548.40-1,029,822.60-313,300.40

Finding the Fourth Proportional to 686,548.40, 1,029,822.60 and 313,300.40

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Solution

The fourth proportional to 686,548.40, 1,029,822.60 and 313,300.40 is: 469,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,548.40 : 1,029,822.60 = 313,300.40 : x
  2. Step 2: Convert to fraction form
    686,548.40/1,029,822.60 = 313,300.40/x
  3. Step 3: Cross multiply
    686,548.40x = 1,029,822.60 × 313,300.40
  4. Step 4: Simplify right side
    686,548.40x = 322,643,832,509.04
  5. Step 5: Solve for x
    x = 322,643,832,509.04/686,548.40
  6. Step 6: Final answer
    x = 469,950.60

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Similar ratio
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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.