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Finding the Fourth Proportional to 1,223,809.60, 1,834,985.40 and 750,834.40

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Solution

The fourth proportional to 1,223,809.60, 1,834,985.40 and 750,834.40 is: 1,125,804.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,809.60 : 1,834,985.40 = 750,834.40 : x
  2. Step 2: Convert to fraction form
    1,223,809.60/1,834,985.40 = 750,834.40/x
  3. Step 3: Cross multiply
    1,223,809.60x = 1,834,985.40 × 750,834.40
  4. Step 4: Simplify right side
    1,223,809.60x = 1,377,770,161,817.76
  5. Step 5: Solve for x
    x = 1,377,770,161,817.76/1,223,809.60
  6. Step 6: Final answer
    x = 1,125,804.34

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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.