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Finding the Fourth Proportional to 713,635.47, 984,830.45 and 391,326.34

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Solution

The fourth proportional to 713,635.47, 984,830.45 and 391,326.34 is: 540,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,635.47 : 984,830.45 = 391,326.34 : x
  2. Step 2: Convert to fraction form
    713,635.47/984,830.45 = 391,326.34/x
  3. Step 3: Cross multiply
    713,635.47x = 984,830.45 × 391,326.34
  4. Step 4: Simplify right side
    713,635.47x = 385,390,095,519.05
  5. Step 5: Solve for x
    x = 385,390,095,519.05/713,635.47
  6. Step 6: Final answer
    x = 540,037.75

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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.