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Finding the Fourth Proportional to 672,897.16, 928,533.54 and 371,071.72

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Solution

The fourth proportional to 672,897.16, 928,533.54 and 371,071.72 is: 512,043.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,897.16 : 928,533.54 = 371,071.72 : x
  2. Step 2: Convert to fraction form
    672,897.16/928,533.54 = 371,071.72/x
  3. Step 3: Cross multiply
    672,897.16x = 928,533.54 × 371,071.72
  4. Step 4: Simplify right side
    672,897.16x = 344,552,537,765.49
  5. Step 5: Solve for x
    x = 344,552,537,765.49/672,897.16
  6. Step 6: Final answer
    x = 512,043.38

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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.