Home / 776,865.38-1,072,103.18-428,019.98

Finding the Fourth Proportional to 776,865.38, 1,072,103.18 and 428,019.98

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Solution

The fourth proportional to 776,865.38, 1,072,103.18 and 428,019.98 is: 590,683.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,865.38 : 1,072,103.18 = 428,019.98 : x
  2. Step 2: Convert to fraction form
    776,865.38/1,072,103.18 = 428,019.98/x
  3. Step 3: Cross multiply
    776,865.38x = 1,072,103.18 × 428,019.98
  4. Step 4: Simplify right side
    776,865.38x = 458,881,574,160.92
  5. Step 5: Solve for x
    x = 458,881,574,160.92/776,865.38
  6. Step 6: Final answer
    x = 590,683.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.