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Finding the Fourth Proportional to 436,208.34, 602,426.40 and 388,658.40

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Solution

The fourth proportional to 436,208.34, 602,426.40 and 388,658.40 is: 536,757.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,208.34 : 602,426.40 = 388,658.40 : x
  2. Step 2: Convert to fraction form
    436,208.34/602,426.40 = 388,658.40/x
  3. Step 3: Cross multiply
    436,208.34x = 602,426.40 × 388,658.40
  4. Step 4: Simplify right side
    436,208.34x = 234,138,080,741.76
  5. Step 5: Solve for x
    x = 234,138,080,741.76/436,208.34
  6. Step 6: Final answer
    x = 536,757.46

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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.