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Finding the Fourth Proportional to 716,242.50, 988,671.76 and 425,853.38

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Solution

The fourth proportional to 716,242.50, 988,671.76 and 425,853.38 is: 587,830.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,242.50 : 988,671.76 = 425,853.38 : x
  2. Step 2: Convert to fraction form
    716,242.50/988,671.76 = 425,853.38/x
  3. Step 3: Cross multiply
    716,242.50x = 988,671.76 × 425,853.38
  4. Step 4: Simplify right side
    716,242.50x = 421,029,210,706.55
  5. Step 5: Solve for x
    x = 421,029,210,706.55/716,242.50
  6. Step 6: Final answer
    x = 587,830.53

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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.