Home / 3,139,320.40-4,708,980.60-775,416.40

Finding the Fourth Proportional to 3,139,320.40, 4,708,980.60 and 775,416.40

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Solution

The fourth proportional to 3,139,320.40, 4,708,980.60 and 775,416.40 is: 1,163,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139,320.40 : 4,708,980.60 = 775,416.40 : x
  2. Step 2: Convert to fraction form
    3,139,320.40/4,708,980.60 = 775,416.40/x
  3. Step 3: Cross multiply
    3,139,320.40x = 4,708,980.60 × 775,416.40
  4. Step 4: Simplify right side
    3,139,320.40x = 3,651,420,784,521.84
  5. Step 5: Solve for x
    x = 3,651,420,784,521.84/3,139,320.40
  6. Step 6: Final answer
    x = 1,163,124.60

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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.