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Finding the Fourth Proportional to 713,584.50, 984,776.50 and 391,307.02

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Solution

The fourth proportional to 713,584.50, 984,776.50 and 391,307.02 is: 540,020.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,584.50 : 984,776.50 = 391,307.02 : x
  2. Step 2: Convert to fraction form
    713,584.50/984,776.50 = 391,307.02/x
  3. Step 3: Cross multiply
    713,584.50x = 984,776.50 × 391,307.02
  4. Step 4: Simplify right side
    713,584.50x = 385,349,957,581.03
  5. Step 5: Solve for x
    x = 385,349,957,581.03/713,584.50
  6. Step 6: Final answer
    x = 540,020.08

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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.