Home / 649,929.45-896,600.40-420,560.87

Finding the Fourth Proportional to 649,929.45, 896,600.40 and 420,560.87

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Solution

The fourth proportional to 649,929.45, 896,600.40 and 420,560.87 is: 580,178.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,929.45 : 896,600.40 = 420,560.87 : x
  2. Step 2: Convert to fraction form
    649,929.45/896,600.40 = 420,560.87/x
  3. Step 3: Cross multiply
    649,929.45x = 896,600.40 × 420,560.87
  4. Step 4: Simplify right side
    649,929.45x = 377,075,044,266.35
  5. Step 5: Solve for x
    x = 377,075,044,266.35/649,929.45
  6. Step 6: Final answer
    x = 580,178.42

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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.