Home / 519,111.40-778,667.10-414,135.40

Finding the Fourth Proportional to 519,111.40, 778,667.10 and 414,135.40

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Solution

The fourth proportional to 519,111.40, 778,667.10 and 414,135.40 is: 621,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,111.40 : 778,667.10 = 414,135.40 : x
  2. Step 2: Convert to fraction form
    519,111.40/778,667.10 = 414,135.40/x
  3. Step 3: Cross multiply
    519,111.40x = 778,667.10 × 414,135.40
  4. Step 4: Simplify right side
    519,111.40x = 322,473,610,925.34
  5. Step 5: Solve for x
    x = 322,473,610,925.34/519,111.40
  6. Step 6: Final answer
    x = 621,203.10

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Double scale
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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.