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Finding the Fourth Proportional to 717,316.59, 989,903.34 and 395,027.94

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Solution

The fourth proportional to 717,316.59, 989,903.34 and 395,027.94 is: 545,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,316.59 : 989,903.34 = 395,027.94 : x
  2. Step 2: Convert to fraction form
    717,316.59/989,903.34 = 395,027.94/x
  3. Step 3: Cross multiply
    717,316.59x = 989,903.34 × 395,027.94
  4. Step 4: Simplify right side
    717,316.59x = 391,039,477,199.32
  5. Step 5: Solve for x
    x = 391,039,477,199.32/717,316.59
  6. Step 6: Final answer
    x = 545,142.11

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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.