Home / 423,220.85-634,683.64-186,434.36

Finding the Fourth Proportional to 423,220.85, 634,683.64 and 186,434.36

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Solution

The fourth proportional to 423,220.85, 634,683.64 and 186,434.36 is: 279,586.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,220.85 : 634,683.64 = 186,434.36 : x
  2. Step 2: Convert to fraction form
    423,220.85/634,683.64 = 186,434.36/x
  3. Step 3: Cross multiply
    423,220.85x = 634,683.64 × 186,434.36
  4. Step 4: Simplify right side
    423,220.85x = 118,326,835,052.45
  5. Step 5: Solve for x
    x = 118,326,835,052.45/423,220.85
  6. Step 6: Final answer
    x = 279,586.50

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1.5x scale

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.