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Finding the Fourth Proportional to 713,364.40, 984,416.49 and 386,670.40

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Solution

The fourth proportional to 713,364.40, 984,416.49 and 386,670.40 is: 533,590.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,364.40 : 984,416.49 = 386,670.40 : x
  2. Step 2: Convert to fraction form
    713,364.40/984,416.49 = 386,670.40/x
  3. Step 3: Cross multiply
    713,364.40x = 984,416.49 × 386,670.40
  4. Step 4: Simplify right side
    713,364.40x = 380,644,719,350.04
  5. Step 5: Solve for x
    x = 380,644,719,350.04/713,364.40
  6. Step 6: Final answer
    x = 533,590.85

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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.