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Finding the Fourth Proportional to 402,079.70, 605,943.40 and 362,148.74

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Solution

The fourth proportional to 402,079.70, 605,943.40 and 362,148.74 is: 545,766.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,079.70 : 605,943.40 = 362,148.74 : x
  2. Step 2: Convert to fraction form
    402,079.70/605,943.40 = 362,148.74/x
  3. Step 3: Cross multiply
    402,079.70x = 605,943.40 × 362,148.74
  4. Step 4: Simplify right side
    402,079.70x = 219,441,638,821.32
  5. Step 5: Solve for x
    x = 219,441,638,821.32/402,079.70
  6. Step 6: Final answer
    x = 545,766.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.