Home / 1,210,851-1,671,134.76-782,377.20

Finding the Fourth Proportional to 1,210,851, 1,671,134.76 and 782,377.20

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Solution

The fourth proportional to 1,210,851, 1,671,134.76 and 782,377.20 is: 1,079,784.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,851 : 1,671,134.76 = 782,377.20 : x
  2. Step 2: Convert to fraction form
    1,210,851/1,671,134.76 = 782,377.20/x
  3. Step 3: Cross multiply
    1,210,851x = 1,671,134.76 × 782,377.20
  4. Step 4: Simplify right side
    1,210,851x = 1,307,457,734,351.47
  5. Step 5: Solve for x
    x = 1,307,457,734,351.47/1,210,851
  6. Step 6: Final answer
    x = 1,079,784.16

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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.