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Finding the Fourth Proportional to 432,559.68, 644,841.12 and 425,742.72

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Solution

The fourth proportional to 432,559.68, 644,841.12 and 425,742.72 is: 634,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,559.68 : 644,841.12 = 425,742.72 : x
  2. Step 2: Convert to fraction form
    432,559.68/644,841.12 = 425,742.72/x
  3. Step 3: Cross multiply
    432,559.68x = 644,841.12 × 425,742.72
  4. Step 4: Simplify right side
    432,559.68x = 274,536,412,396.65
  5. Step 5: Solve for x
    x = 274,536,412,396.65/432,559.68
  6. Step 6: Final answer
    x = 634,678.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.