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Finding the Fourth Proportional to 644,818.08, 889,840.98 and 372,878.40

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Solution

The fourth proportional to 644,818.08, 889,840.98 and 372,878.40 is: 514,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,818.08 : 889,840.98 = 372,878.40 : x
  2. Step 2: Convert to fraction form
    644,818.08/889,840.98 = 372,878.40/x
  3. Step 3: Cross multiply
    644,818.08x = 889,840.98 × 372,878.40
  4. Step 4: Simplify right side
    644,818.08x = 331,802,480,876.83
  5. Step 5: Solve for x
    x = 331,802,480,876.83/644,818.08
  6. Step 6: Final answer
    x = 514,567.58

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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.