Home / 1,245,342.60-1,868,013.90-712,917.45

Finding the Fourth Proportional to 1,245,342.60, 1,868,013.90 and 712,917.45

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Solution

The fourth proportional to 1,245,342.60, 1,868,013.90 and 712,917.45 is: 1,069,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,342.60 : 1,868,013.90 = 712,917.45 : x
  2. Step 2: Convert to fraction form
    1,245,342.60/1,868,013.90 = 712,917.45/x
  3. Step 3: Cross multiply
    1,245,342.60x = 1,868,013.90 × 712,917.45
  4. Step 4: Simplify right side
    1,245,342.60x = 1,331,739,706,152.56
  5. Step 5: Solve for x
    x = 1,331,739,706,152.56/1,245,342.60
  6. Step 6: Final answer
    x = 1,069,376.18

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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.