Home / 426,947.40-639,902.70-190,038.60

Finding the Fourth Proportional to 426,947.40, 639,902.70 and 190,038.60

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Solution

The fourth proportional to 426,947.40, 639,902.70 and 190,038.60 is: 284,827.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,947.40 : 639,902.70 = 190,038.60 : x
  2. Step 2: Convert to fraction form
    426,947.40/639,902.70 = 190,038.60/x
  3. Step 3: Cross multiply
    426,947.40x = 639,902.70 × 190,038.60
  4. Step 4: Simplify right side
    426,947.40x = 121,606,213,244.22
  5. Step 5: Solve for x
    x = 121,606,213,244.22/426,947.40
  6. Step 6: Final answer
    x = 284,827.15

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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.