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Finding the Fourth Proportional to 458,528.40, 687,792.60 and 353,552.40

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Solution

The fourth proportional to 458,528.40, 687,792.60 and 353,552.40 is: 530,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,528.40 : 687,792.60 = 353,552.40 : x
  2. Step 2: Convert to fraction form
    458,528.40/687,792.60 = 353,552.40/x
  3. Step 3: Cross multiply
    458,528.40x = 687,792.60 × 353,552.40
  4. Step 4: Simplify right side
    458,528.40x = 243,170,724,432.24
  5. Step 5: Solve for x
    x = 243,170,724,432.24/458,528.40
  6. Step 6: Final answer
    x = 530,328.60

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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.