Home / 611,580.64-916,890.36-386,467.60

Finding the Fourth Proportional to 611,580.64, 916,890.36 and 386,467.60

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Solution

The fourth proportional to 611,580.64, 916,890.36 and 386,467.60 is: 579,397.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,580.64 : 916,890.36 = 386,467.60 : x
  2. Step 2: Convert to fraction form
    611,580.64/916,890.36 = 386,467.60/x
  3. Step 3: Cross multiply
    611,580.64x = 916,890.36 × 386,467.60
  4. Step 4: Simplify right side
    611,580.64x = 354,348,416,892.34
  5. Step 5: Solve for x
    x = 354,348,416,892.34/611,580.64
  6. Step 6: Final answer
    x = 579,397.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.