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Finding the Fourth Proportional to 1,047,779.60, 1,569,336.60 and 907,811.60

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Solution

The fourth proportional to 1,047,779.60, 1,569,336.60 and 907,811.60 is: 1,359,696.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,779.60 : 1,569,336.60 = 907,811.60 : x
  2. Step 2: Convert to fraction form
    1,047,779.60/1,569,336.60 = 907,811.60/x
  3. Step 3: Cross multiply
    1,047,779.60x = 1,569,336.60 × 907,811.60
  4. Step 4: Simplify right side
    1,047,779.60x = 1,424,661,969,784.56
  5. Step 5: Solve for x
    x = 1,424,661,969,784.56/1,047,779.60
  6. Step 6: Final answer
    x = 1,359,696.23

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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.