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Finding the Fourth Proportional to 611,225.55, 843,451.38 and 339,280.47

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Solution

The fourth proportional to 611,225.55, 843,451.38 and 339,280.47 is: 468,184.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,225.55 : 843,451.38 = 339,280.47 : x
  2. Step 2: Convert to fraction form
    611,225.55/843,451.38 = 339,280.47/x
  3. Step 3: Cross multiply
    611,225.55x = 843,451.38 × 339,280.47
  4. Step 4: Simplify right side
    611,225.55x = 286,166,580,628.55
  5. Step 5: Solve for x
    x = 286,166,580,628.55/611,225.55
  6. Step 6: Final answer
    x = 468,184.91

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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.