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Finding the Fourth Proportional to 611,689.32, 844,130.97 and 339,782.45

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Solution

The fourth proportional to 611,689.32, 844,130.97 and 339,782.45 is: 468,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,689.32 : 844,130.97 = 339,782.45 : x
  2. Step 2: Convert to fraction form
    611,689.32/844,130.97 = 339,782.45/x
  3. Step 3: Cross multiply
    611,689.32x = 844,130.97 × 339,782.45
  4. Step 4: Simplify right side
    611,689.32x = 286,820,884,886.82
  5. Step 5: Solve for x
    x = 286,820,884,886.82/611,689.32
  6. Step 6: Final answer
    x = 468,899.61

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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.