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Finding the Fourth Proportional to 607,079.81, 836,991.33 and 497,781.45

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Solution

The fourth proportional to 607,079.81, 836,991.33 and 497,781.45 is: 686,299.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,079.81 : 836,991.33 = 497,781.45 : x
  2. Step 2: Convert to fraction form
    607,079.81/836,991.33 = 497,781.45/x
  3. Step 3: Cross multiply
    607,079.81x = 836,991.33 × 497,781.45
  4. Step 4: Simplify right side
    607,079.81x = 416,638,756,018.15
  5. Step 5: Solve for x
    x = 416,638,756,018.15/607,079.81
  6. Step 6: Final answer
    x = 686,299.80

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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.