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Finding the Fourth Proportional to 776,579.60, 1,164,869.40 and 617,949.20

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Solution

The fourth proportional to 776,579.60, 1,164,869.40 and 617,949.20 is: 926,923.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,579.60 : 1,164,869.40 = 617,949.20 : x
  2. Step 2: Convert to fraction form
    776,579.60/1,164,869.40 = 617,949.20/x
  3. Step 3: Cross multiply
    776,579.60x = 1,164,869.40 × 617,949.20
  4. Step 4: Simplify right side
    776,579.60x = 719,830,113,834.48
  5. Step 5: Solve for x
    x = 719,830,113,834.48/776,579.60
  6. Step 6: Final answer
    x = 926,923.80

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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.