Home / 1,287,564.30-1,931,346.45-783,114.53

Finding the Fourth Proportional to 1,287,564.30, 1,931,346.45 and 783,114.53

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Solution

The fourth proportional to 1,287,564.30, 1,931,346.45 and 783,114.53 is: 1,174,671.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,564.30 : 1,931,346.45 = 783,114.53 : x
  2. Step 2: Convert to fraction form
    1,287,564.30/1,931,346.45 = 783,114.53/x
  3. Step 3: Cross multiply
    1,287,564.30x = 1,931,346.45 × 783,114.53
  4. Step 4: Simplify right side
    1,287,564.30x = 1,512,465,457,802.19
  5. Step 5: Solve for x
    x = 1,512,465,457,802.19/1,287,564.30
  6. Step 6: Final answer
    x = 1,174,671.79

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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.