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Finding the Fourth Proportional to 672,904.16, 928,543.20 and 371,078.72

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Solution

The fourth proportional to 672,904.16, 928,543.20 and 371,078.72 is: 512,053.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,904.16 : 928,543.20 = 371,078.72 : x
  2. Step 2: Convert to fraction form
    672,904.16/928,543.20 = 371,078.72/x
  3. Step 3: Cross multiply
    672,904.16x = 928,543.20 × 371,078.72
  4. Step 4: Simplify right side
    672,904.16x = 344,562,622,120.70
  5. Step 5: Solve for x
    x = 344,562,622,120.70/672,904.16
  6. Step 6: Final answer
    x = 512,053.04

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Double scale
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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.