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Finding the Fourth Proportional to 707,342.09, 976,206.53 and 619,320.80

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Solution

The fourth proportional to 707,342.09, 976,206.53 and 619,320.80 is: 854,727.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,342.09 : 976,206.53 = 619,320.80 : x
  2. Step 2: Convert to fraction form
    707,342.09/976,206.53 = 619,320.80/x
  3. Step 3: Cross multiply
    707,342.09x = 976,206.53 × 619,320.80
  4. Step 4: Simplify right side
    707,342.09x = 604,585,013,113.64
  5. Step 5: Solve for x
    x = 604,585,013,113.64/707,342.09
  6. Step 6: Final answer
    x = 854,727.90

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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.