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Finding the Fourth Proportional to 672,705, 928,340.16 and 366,778.89

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Solution

The fourth proportional to 672,705, 928,340.16 and 366,778.89 is: 506,158.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,705 : 928,340.16 = 366,778.89 : x
  2. Step 2: Convert to fraction form
    672,705/928,340.16 = 366,778.89/x
  3. Step 3: Cross multiply
    672,705x = 928,340.16 × 366,778.89
  4. Step 4: Simplify right side
    672,705x = 340,495,573,427.22
  5. Step 5: Solve for x
    x = 340,495,573,427.22/672,705
  6. Step 6: Final answer
    x = 506,158.83

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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.