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Finding the Fourth Proportional to 672,870.64, 928,633.50 and 411,379.38

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Solution

The fourth proportional to 672,870.64, 928,633.50 and 411,379.38 is: 567,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,870.64 : 928,633.50 = 411,379.38 : x
  2. Step 2: Convert to fraction form
    672,870.64/928,633.50 = 411,379.38/x
  3. Step 3: Cross multiply
    672,870.64x = 928,633.50 × 411,379.38
  4. Step 4: Simplify right side
    672,870.64x = 382,020,673,477.23
  5. Step 5: Solve for x
    x = 382,020,673,477.23/672,870.64
  6. Step 6: Final answer
    x = 567,747.57

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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.