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Finding the Fourth Proportional to 761,718.50, 1,051,205.82 and 435,059.90

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Solution

The fourth proportional to 761,718.50, 1,051,205.82 and 435,059.90 is: 600,402.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,718.50 : 1,051,205.82 = 435,059.90 : x
  2. Step 2: Convert to fraction form
    761,718.50/1,051,205.82 = 435,059.90/x
  3. Step 3: Cross multiply
    761,718.50x = 1,051,205.82 × 435,059.90
  4. Step 4: Simplify right side
    761,718.50x = 457,337,498,928.62
  5. Step 5: Solve for x
    x = 457,337,498,928.62/761,718.50
  6. Step 6: Final answer
    x = 600,402.25

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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.