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Finding the Fourth Proportional to 690,217.98, 952,354.40 and 435,421.50

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Solution

The fourth proportional to 690,217.98, 952,354.40 and 435,421.50 is: 600,789.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,217.98 : 952,354.40 = 435,421.50 : x
  2. Step 2: Convert to fraction form
    690,217.98/952,354.40 = 435,421.50/x
  3. Step 3: Cross multiply
    690,217.98x = 952,354.40 × 435,421.50
  4. Step 4: Simplify right side
    690,217.98x = 414,675,579,202.49
  5. Step 5: Solve for x
    x = 414,675,579,202.49/690,217.98
  6. Step 6: Final answer
    x = 600,789.30

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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.