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Finding the Fourth Proportional to 647,618.09, 893,718.77 and 357,240.77

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Solution

The fourth proportional to 647,618.09, 893,718.77 and 357,240.77 is: 492,995.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,618.09 : 893,718.77 = 357,240.77 : x
  2. Step 2: Convert to fraction form
    647,618.09/893,718.77 = 357,240.77/x
  3. Step 3: Cross multiply
    647,618.09x = 893,718.77 × 357,240.77
  4. Step 4: Simplify right side
    647,618.09x = 319,272,777,982.76
  5. Step 5: Solve for x
    x = 319,272,777,982.76/647,618.09
  6. Step 6: Final answer
    x = 492,995.46

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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.