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Finding the Fourth Proportional to 611,897.30, 916,949.55 and 548,717.30

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Solution

The fourth proportional to 611,897.30, 916,949.55 and 548,717.30 is: 822,272.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,897.30 : 916,949.55 = 548,717.30 : x
  2. Step 2: Convert to fraction form
    611,897.30/916,949.55 = 548,717.30/x
  3. Step 3: Cross multiply
    611,897.30x = 916,949.55 × 548,717.30
  4. Step 4: Simplify right side
    611,897.30x = 503,146,081,312.22
  5. Step 5: Solve for x
    x = 503,146,081,312.22/611,897.30
  6. Step 6: Final answer
    x = 822,272.11

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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.