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Finding the Fourth Proportional to 1,047,788.80, 1,569,609.60 and 625,811.20

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Solution

The fourth proportional to 1,047,788.80, 1,569,609.60 and 625,811.20 is: 937,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,788.80 : 1,569,609.60 = 625,811.20 : x
  2. Step 2: Convert to fraction form
    1,047,788.80/1,569,609.60 = 625,811.20/x
  3. Step 3: Cross multiply
    1,047,788.80x = 1,569,609.60 × 625,811.20
  4. Step 4: Simplify right side
    1,047,788.80x = 982,279,267,307.52
  5. Step 5: Solve for x
    x = 982,279,267,307.52/1,047,788.80
  6. Step 6: Final answer
    x = 937,478.30

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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.