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Finding the Fourth Proportional to 495,211.80, 740,849.40 and 429,383.10

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Solution

The fourth proportional to 495,211.80, 740,849.40 and 429,383.10 is: 642,368.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,211.80 : 740,849.40 = 429,383.10 : x
  2. Step 2: Convert to fraction form
    495,211.80/740,849.40 = 429,383.10/x
  3. Step 3: Cross multiply
    495,211.80x = 740,849.40 × 429,383.10
  4. Step 4: Simplify right side
    495,211.80x = 318,108,212,005.14
  5. Step 5: Solve for x
    x = 318,108,212,005.14/495,211.80
  6. Step 6: Final answer
    x = 642,368.00

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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.