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Finding the Fourth Proportional to 810,693.96, 1,118,603.70 and 508,751.88

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Solution

The fourth proportional to 810,693.96, 1,118,603.70 and 508,751.88 is: 701,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,693.96 : 1,118,603.70 = 508,751.88 : x
  2. Step 2: Convert to fraction form
    810,693.96/1,118,603.70 = 508,751.88/x
  3. Step 3: Cross multiply
    810,693.96x = 1,118,603.70 × 508,751.88
  4. Step 4: Simplify right side
    810,693.96x = 569,091,735,349.96
  5. Step 5: Solve for x
    x = 569,091,735,349.96/810,693.96
  6. Step 6: Final answer
    x = 701,980.97

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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.