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Finding the Fourth Proportional to 672,600, 1,006,407.90 and 539,075.28

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Solution

The fourth proportional to 672,600, 1,006,407.90 and 539,075.28 is: 806,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,600 : 1,006,407.90 = 539,075.28 : x
  2. Step 2: Convert to fraction form
    672,600/1,006,407.90 = 539,075.28/x
  3. Step 3: Cross multiply
    672,600x = 1,006,407.90 × 539,075.28
  4. Step 4: Simplify right side
    672,600x = 542,529,620,486.71
  5. Step 5: Solve for x
    x = 542,529,620,486.71/672,600
  6. Step 6: Final answer
    x = 806,615.55

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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.