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Finding the Fourth Proportional to 673,144.16, 928,874.40 and 371,318.72

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Solution

The fourth proportional to 673,144.16, 928,874.40 and 371,318.72 is: 512,384.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,144.16 : 928,874.40 = 371,318.72 : x
  2. Step 2: Convert to fraction form
    673,144.16/928,874.40 = 371,318.72/x
  3. Step 3: Cross multiply
    673,144.16x = 928,874.40 × 371,318.72
  4. Step 4: Simplify right side
    673,144.16x = 344,908,453,248.77
  5. Step 5: Solve for x
    x = 344,908,453,248.77/673,144.16
  6. Step 6: Final answer
    x = 512,384.23

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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.