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Finding the Fourth Proportional to 611,820.42, 917,748.75 and 292,006.01

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Solution

The fourth proportional to 611,820.42, 917,748.75 and 292,006.01 is: 438,017.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,820.42 : 917,748.75 = 292,006.01 : x
  2. Step 2: Convert to fraction form
    611,820.42/917,748.75 = 292,006.01/x
  3. Step 3: Cross multiply
    611,820.42x = 917,748.75 × 292,006.01
  4. Step 4: Simplify right side
    611,820.42x = 267,988,146,081.24
  5. Step 5: Solve for x
    x = 267,988,146,081.24/611,820.42
  6. Step 6: Final answer
    x = 438,017.66

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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.