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Finding the Fourth Proportional to 713,867.04, 985,136.52 and 391,577.88

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Solution

The fourth proportional to 713,867.04, 985,136.52 and 391,577.88 is: 540,377.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,867.04 : 985,136.52 = 391,577.88 : x
  2. Step 2: Convert to fraction form
    713,867.04/985,136.52 = 391,577.88/x
  3. Step 3: Cross multiply
    713,867.04x = 985,136.52 × 391,577.88
  4. Step 4: Simplify right side
    713,867.04x = 385,757,670,012.18
  5. Step 5: Solve for x
    x = 385,757,670,012.18/713,867.04
  6. Step 6: Final answer
    x = 540,377.48

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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.