Home / 1,219,403.20-1,829,104.80-771,505.60

Finding the Fourth Proportional to 1,219,403.20, 1,829,104.80 and 771,505.60

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Solution

The fourth proportional to 1,219,403.20, 1,829,104.80 and 771,505.60 is: 1,157,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,403.20 : 1,829,104.80 = 771,505.60 : x
  2. Step 2: Convert to fraction form
    1,219,403.20/1,829,104.80 = 771,505.60/x
  3. Step 3: Cross multiply
    1,219,403.20x = 1,829,104.80 × 771,505.60
  4. Step 4: Simplify right side
    1,219,403.20x = 1,411,164,596,186.88
  5. Step 5: Solve for x
    x = 1,411,164,596,186.88/1,219,403.20
  6. Step 6: Final answer
    x = 1,157,258.40

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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.