Home / 830,427.45-1,138,515.98-815,293.87

Finding the Fourth Proportional to 830,427.45, 1,138,515.98 and 815,293.87

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Solution

The fourth proportional to 830,427.45, 1,138,515.98 and 815,293.87 is: 1,117,767.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,427.45 : 1,138,515.98 = 815,293.87 : x
  2. Step 2: Convert to fraction form
    830,427.45/1,138,515.98 = 815,293.87/x
  3. Step 3: Cross multiply
    830,427.45x = 1,138,515.98 × 815,293.87
  4. Step 4: Simplify right side
    830,427.45x = 928,225,099,391.04
  5. Step 5: Solve for x
    x = 928,225,099,391.04/830,427.45
  6. Step 6: Final answer
    x = 1,117,767.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.