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Finding the Fourth Proportional to 458,468,645.60, 687,702,968.40 and 416,142,322.40

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Solution

The fourth proportional to 458,468,645.60, 687,702,968.40 and 416,142,322.40 is: 624,213,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,468,645.60 : 687,702,968.40 = 416,142,322.40 : x
  2. Step 2: Convert to fraction form
    458,468,645.60/687,702,968.40 = 416,142,322.40/x
  3. Step 3: Cross multiply
    458,468,645.60x = 687,702,968.40 × 416,142,322.40
  4. Step 4: Simplify right side
    458,468,645.60x = 286,182,310,391,349,792
  5. Step 5: Solve for x
    x = 286,182,310,391,349,792/458,468,645.60
  6. Step 6: Final answer
    x = 624,213,483.60

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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.