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Finding the Fourth Proportional to 713,383.10, 984,457.50 and 391,095.86

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Solution

The fourth proportional to 713,383.10, 984,457.50 and 391,095.86 is: 539,706.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,383.10 : 984,457.50 = 391,095.86 : x
  2. Step 2: Convert to fraction form
    713,383.10/984,457.50 = 391,095.86/x
  3. Step 3: Cross multiply
    713,383.10x = 984,457.50 × 391,095.86
  4. Step 4: Simplify right side
    713,383.10x = 385,017,252,595.95
  5. Step 5: Solve for x
    x = 385,017,252,595.95/713,383.10
  6. Step 6: Final answer
    x = 539,706.16

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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.