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Finding the Fourth Proportional to 715,250.79, 986,475.13 and 470,486.90

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Solution

The fourth proportional to 715,250.79, 986,475.13 and 470,486.90 is: 648,896.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,250.79 : 986,475.13 = 470,486.90 : x
  2. Step 2: Convert to fraction form
    715,250.79/986,475.13 = 470,486.90/x
  3. Step 3: Cross multiply
    715,250.79x = 986,475.13 × 470,486.90
  4. Step 4: Simplify right side
    715,250.79x = 464,123,627,130.77
  5. Step 5: Solve for x
    x = 464,123,627,130.77/715,250.79
  6. Step 6: Final answer
    x = 648,896.35

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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.