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Finding the Fourth Proportional to 610,085.20, 841,968 and 338,238.40

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Solution

The fourth proportional to 610,085.20, 841,968 and 338,238.40 is: 466,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,085.20 : 841,968 = 338,238.40 : x
  2. Step 2: Convert to fraction form
    610,085.20/841,968 = 338,238.40/x
  3. Step 3: Cross multiply
    610,085.20x = 841,968 × 338,238.40
  4. Step 4: Simplify right side
    610,085.20x = 284,785,909,171.20
  5. Step 5: Solve for x
    x = 284,785,909,171.20/610,085.20
  6. Step 6: Final answer
    x = 466,796.95

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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.