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Finding the Fourth Proportional to 718,390.24, 990,348.47 and 565,162.34

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Solution

The fourth proportional to 718,390.24, 990,348.47 and 565,162.34 is: 779,113.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,390.24 : 990,348.47 = 565,162.34 : x
  2. Step 2: Convert to fraction form
    718,390.24/990,348.47 = 565,162.34/x
  3. Step 3: Cross multiply
    718,390.24x = 990,348.47 × 565,162.34
  4. Step 4: Simplify right side
    718,390.24x = 559,707,659,026.82
  5. Step 5: Solve for x
    x = 559,707,659,026.82/718,390.24
  6. Step 6: Final answer
    x = 779,113.67

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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.