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Finding the Fourth Proportional to 578,365.74, 798,136.47 and 320,217.93

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Solution

The fourth proportional to 578,365.74, 798,136.47 and 320,217.93 is: 441,896.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,365.74 : 798,136.47 = 320,217.93 : x
  2. Step 2: Convert to fraction form
    578,365.74/798,136.47 = 320,217.93/x
  3. Step 3: Cross multiply
    578,365.74x = 798,136.47 × 320,217.93
  4. Step 4: Simplify right side
    578,365.74x = 255,577,608,280.91
  5. Step 5: Solve for x
    x = 255,577,608,280.91/578,365.74
  6. Step 6: Final answer
    x = 441,896.18

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1.5x scale

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.