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Finding the Fourth Proportional to 617,403.42, 851,746.38 and 362,639.76

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Solution

The fourth proportional to 617,403.42, 851,746.38 and 362,639.76 is: 500,284.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,403.42 : 851,746.38 = 362,639.76 : x
  2. Step 2: Convert to fraction form
    617,403.42/851,746.38 = 362,639.76/x
  3. Step 3: Cross multiply
    617,403.42x = 851,746.38 × 362,639.76
  4. Step 4: Simplify right side
    617,403.42x = 308,877,102,824.07
  5. Step 5: Solve for x
    x = 308,877,102,824.07/617,403.42
  6. Step 6: Final answer
    x = 500,284.08

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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.