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Finding the Fourth Proportional to 455,415.40, 683,123.10 and 350,439.40

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Solution

The fourth proportional to 455,415.40, 683,123.10 and 350,439.40 is: 525,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,415.40 : 683,123.10 = 350,439.40 : x
  2. Step 2: Convert to fraction form
    455,415.40/683,123.10 = 350,439.40/x
  3. Step 3: Cross multiply
    455,415.40x = 683,123.10 × 350,439.40
  4. Step 4: Simplify right side
    455,415.40x = 239,393,249,290.14
  5. Step 5: Solve for x
    x = 239,393,249,290.14/455,415.40
  6. Step 6: Final answer
    x = 525,659.10

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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.