Home / 1,245,686.40-1,868,529.48-712,830.74

Finding the Fourth Proportional to 1,245,686.40, 1,868,529.48 and 712,830.74

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Solution

The fourth proportional to 1,245,686.40, 1,868,529.48 and 712,830.74 is: 1,069,246.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,686.40 : 1,868,529.48 = 712,830.74 : x
  2. Step 2: Convert to fraction form
    1,245,686.40/1,868,529.48 = 712,830.74/x
  3. Step 3: Cross multiply
    1,245,686.40x = 1,868,529.48 × 712,830.74
  4. Step 4: Simplify right side
    1,245,686.40x = 1,331,945,242,597.57
  5. Step 5: Solve for x
    x = 1,331,945,242,597.57/1,245,686.40
  6. Step 6: Final answer
    x = 1,069,246.03

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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.