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Finding the Fourth Proportional to 451,909.81, 623,068.14 and 330,840.91

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Solution

The fourth proportional to 451,909.81, 623,068.14 and 330,840.91 is: 456,145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,909.81 : 623,068.14 = 330,840.91 : x
  2. Step 2: Convert to fraction form
    451,909.81/623,068.14 = 330,840.91/x
  3. Step 3: Cross multiply
    451,909.81x = 623,068.14 × 330,840.91
  4. Step 4: Simplify right side
    451,909.81x = 206,136,430,429.61
  5. Step 5: Solve for x
    x = 206,136,430,429.61/451,909.81
  6. Step 6: Final answer
    x = 456,145.07

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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.