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Finding the Fourth Proportional to 709,020.42, 978,927.29 and 545,386.33

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Solution

The fourth proportional to 709,020.42, 978,927.29 and 545,386.33 is: 753,001.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,020.42 : 978,927.29 = 545,386.33 : x
  2. Step 2: Convert to fraction form
    709,020.42/978,927.29 = 545,386.33/x
  3. Step 3: Cross multiply
    709,020.42x = 978,927.29 × 545,386.33
  4. Step 4: Simplify right side
    709,020.42x = 533,893,562,029.95
  5. Step 5: Solve for x
    x = 533,893,562,029.95/709,020.42
  6. Step 6: Final answer
    x = 753,001.67

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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.