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Finding the Fourth Proportional to 879,206.40, 1,318,809.60 and 346,744.80

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Solution

The fourth proportional to 879,206.40, 1,318,809.60 and 346,744.80 is: 520,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,206.40 : 1,318,809.60 = 346,744.80 : x
  2. Step 2: Convert to fraction form
    879,206.40/1,318,809.60 = 346,744.80/x
  3. Step 3: Cross multiply
    879,206.40x = 1,318,809.60 × 346,744.80
  4. Step 4: Simplify right side
    879,206.40x = 457,290,370,990.08
  5. Step 5: Solve for x
    x = 457,290,370,990.08/879,206.40
  6. Step 6: Final answer
    x = 520,117.20

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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.