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Finding the Fourth Proportional to 611,214.23, 917,424.74 and 458,881.48

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Solution

The fourth proportional to 611,214.23, 917,424.74 and 458,881.48 is: 688,775.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,214.23 : 917,424.74 = 458,881.48 : x
  2. Step 2: Convert to fraction form
    611,214.23/917,424.74 = 458,881.48/x
  3. Step 3: Cross multiply
    611,214.23x = 917,424.74 × 458,881.48
  4. Step 4: Simplify right side
    611,214.23x = 420,989,222,838.85
  5. Step 5: Solve for x
    x = 420,989,222,838.85/611,214.23
  6. Step 6: Final answer
    x = 688,775.23

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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.