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Finding the Fourth Proportional to 1,047,779.10, 1,569,335.85 and 907,811.10

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Solution

The fourth proportional to 1,047,779.10, 1,569,335.85 and 907,811.10 is: 1,359,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,047,779.10 : 1,569,335.85 = 907,811.10 : x
  2. Step 2: Convert to fraction form
    1,047,779.10/1,569,335.85 = 907,811.10/x
  3. Step 3: Cross multiply
    1,047,779.10x = 1,569,335.85 × 907,811.10
  4. Step 4: Simplify right side
    1,047,779.10x = 1,424,660,504,257.94
  5. Step 5: Solve for x
    x = 1,424,660,504,257.94/1,047,779.10
  6. Step 6: Final answer
    x = 1,359,695.48

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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.