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Finding the Fourth Proportional to 644,559.52, 889,515.36 and 372,712.72

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Solution

The fourth proportional to 644,559.52, 889,515.36 and 372,712.72 is: 514,356.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,559.52 : 889,515.36 = 372,712.72 : x
  2. Step 2: Convert to fraction form
    644,559.52/889,515.36 = 372,712.72/x
  3. Step 3: Cross multiply
    644,559.52x = 889,515.36 × 372,712.72
  4. Step 4: Simplify right side
    644,559.52x = 331,533,689,307.38
  5. Step 5: Solve for x
    x = 331,533,689,307.38/644,559.52
  6. Step 6: Final answer
    x = 514,356.98

Related Problems

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Half scale
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Double scale
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Similar ratio
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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.