Home / 1,287,242.78-1,931,039.53-747,752.22

Finding the Fourth Proportional to 1,287,242.78, 1,931,039.53 and 747,752.22

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Solution

The fourth proportional to 1,287,242.78, 1,931,039.53 and 747,752.22 is: 1,121,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,242.78 : 1,931,039.53 = 747,752.22 : x
  2. Step 2: Convert to fraction form
    1,287,242.78/1,931,039.53 = 747,752.22/x
  3. Step 3: Cross multiply
    1,287,242.78x = 1,931,039.53 × 747,752.22
  4. Step 4: Simplify right side
    1,287,242.78x = 1,443,939,095,465.26
  5. Step 5: Solve for x
    x = 1,443,939,095,465.26/1,287,242.78
  6. Step 6: Final answer
    x = 1,121,730.20

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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.