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Finding the Fourth Proportional to 693,480.32, 956,886.40 and 421,501.44

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Solution

The fourth proportional to 693,480.32, 956,886.40 and 421,501.44 is: 581,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,480.32 : 956,886.40 = 421,501.44 : x
  2. Step 2: Convert to fraction form
    693,480.32/956,886.40 = 421,501.44/x
  3. Step 3: Cross multiply
    693,480.32x = 956,886.40 × 421,501.44
  4. Step 4: Simplify right side
    693,480.32x = 403,328,995,516.42
  5. Step 5: Solve for x
    x = 403,328,995,516.42/693,480.32
  6. Step 6: Final answer
    x = 581,601.21

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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.