Home / 708,118.03-977,190.55-385,830.78

Finding the Fourth Proportional to 708,118.03, 977,190.55 and 385,830.78

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Solution

The fourth proportional to 708,118.03, 977,190.55 and 385,830.78 is: 532,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,118.03 : 977,190.55 = 385,830.78 : x
  2. Step 2: Convert to fraction form
    708,118.03/977,190.55 = 385,830.78/x
  3. Step 3: Cross multiply
    708,118.03x = 977,190.55 × 385,830.78
  4. Step 4: Simplify right side
    708,118.03x = 377,030,192,115.13
  5. Step 5: Solve for x
    x = 377,030,192,115.13/708,118.03
  6. Step 6: Final answer
    x = 532,439.76

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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.