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Finding the Fourth Proportional to 609,785.66, 914,990.74 and 290,298.98

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Solution

The fourth proportional to 609,785.66, 914,990.74 and 290,298.98 is: 435,597.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,785.66 : 914,990.74 = 290,298.98 : x
  2. Step 2: Convert to fraction form
    609,785.66/914,990.74 = 290,298.98/x
  3. Step 3: Cross multiply
    609,785.66x = 914,990.74 × 290,298.98
  4. Step 4: Simplify right side
    609,785.66x = 265,620,878,531.45
  5. Step 5: Solve for x
    x = 265,620,878,531.45/609,785.66
  6. Step 6: Final answer
    x = 435,597.12

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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.