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Finding the Fourth Proportional to 665,904.40, 918,951.62 and 364,098.40

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Solution

The fourth proportional to 665,904.40, 918,951.62 and 364,098.40 is: 502,457.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,904.40 : 918,951.62 = 364,098.40 : x
  2. Step 2: Convert to fraction form
    665,904.40/918,951.62 = 364,098.40/x
  3. Step 3: Cross multiply
    665,904.40x = 918,951.62 × 364,098.40
  4. Step 4: Simplify right side
    665,904.40x = 334,588,814,519.41
  5. Step 5: Solve for x
    x = 334,588,814,519.41/665,904.40
  6. Step 6: Final answer
    x = 502,457.73

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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.