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Finding the Fourth Proportional to 713,095.86, 984,073.68 and 390,817.92

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Solution

The fourth proportional to 713,095.86, 984,073.68 and 390,817.92 is: 539,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,095.86 : 984,073.68 = 390,817.92 : x
  2. Step 2: Convert to fraction form
    713,095.86/984,073.68 = 390,817.92/x
  3. Step 3: Cross multiply
    713,095.86x = 984,073.68 × 390,817.92
  4. Step 4: Simplify right side
    713,095.86x = 384,593,628,744.35
  5. Step 5: Solve for x
    x = 384,593,628,744.35/713,095.86
  6. Step 6: Final answer
    x = 539,329.49

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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.