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Finding the Fourth Proportional to 674,703.96, 931,089.86 and 384,315.48

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Solution

The fourth proportional to 674,703.96, 931,089.86 and 384,315.48 is: 530,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,703.96 : 931,089.86 = 384,315.48 : x
  2. Step 2: Convert to fraction form
    674,703.96/931,089.86 = 384,315.48/x
  3. Step 3: Cross multiply
    674,703.96x = 931,089.86 × 384,315.48
  4. Step 4: Simplify right side
    674,703.96x = 357,832,246,469.03
  5. Step 5: Solve for x
    x = 357,832,246,469.03/674,703.96
  6. Step 6: Final answer
    x = 530,354.45

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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.