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Finding the Fourth Proportional to 458,316.40, 687,474.60 and 436,543.60

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Solution

The fourth proportional to 458,316.40, 687,474.60 and 436,543.60 is: 654,815.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,316.40 : 687,474.60 = 436,543.60 : x
  2. Step 2: Convert to fraction form
    458,316.40/687,474.60 = 436,543.60/x
  3. Step 3: Cross multiply
    458,316.40x = 687,474.60 × 436,543.60
  4. Step 4: Simplify right side
    458,316.40x = 300,112,636,792.56
  5. Step 5: Solve for x
    x = 300,112,636,792.56/458,316.40
  6. Step 6: Final answer
    x = 654,815.40

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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.