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Finding the Fourth Proportional to 1,225,280.80, 1,835,296.80 and 1,015,328.80

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Solution

The fourth proportional to 1,225,280.80, 1,835,296.80 and 1,015,328.80 is: 1,520,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,280.80 : 1,835,296.80 = 1,015,328.80 : x
  2. Step 2: Convert to fraction form
    1,225,280.80/1,835,296.80 = 1,015,328.80/x
  3. Step 3: Cross multiply
    1,225,280.80x = 1,835,296.80 × 1,015,328.80
  4. Step 4: Simplify right side
    1,225,280.80x = 1,863,429,697,587.84
  5. Step 5: Solve for x
    x = 1,863,429,697,587.84/1,225,280.80
  6. Step 6: Final answer
    x = 1,520,818.49

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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.