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Finding the Fourth Proportional to 716,396.78, 987,948.98 and 458,355.38

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Solution

The fourth proportional to 716,396.78, 987,948.98 and 458,355.38 is: 632,096.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,396.78 : 987,948.98 = 458,355.38 : x
  2. Step 2: Convert to fraction form
    716,396.78/987,948.98 = 458,355.38/x
  3. Step 3: Cross multiply
    716,396.78x = 987,948.98 × 458,355.38
  4. Step 4: Simplify right side
    716,396.78x = 452,831,730,148.51
  5. Step 5: Solve for x
    x = 452,831,730,148.51/716,396.78
  6. Step 6: Final answer
    x = 632,096.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.