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Finding the Fourth Proportional to 684,987.84, 945,259.99 and 379,077.16

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Solution

The fourth proportional to 684,987.84, 945,259.99 and 379,077.16 is: 523,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,987.84 : 945,259.99 = 379,077.16 : x
  2. Step 2: Convert to fraction form
    684,987.84/945,259.99 = 379,077.16/x
  3. Step 3: Cross multiply
    684,987.84x = 945,259.99 × 379,077.16
  4. Step 4: Simplify right side
    684,987.84x = 358,326,472,470.83
  5. Step 5: Solve for x
    x = 358,326,472,470.83/684,987.84
  6. Step 6: Final answer
    x = 523,113.63

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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.