Home / 909,085.21-1,253,638.74-771,639.46

Finding the Fourth Proportional to 909,085.21, 1,253,638.74 and 771,639.46

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Solution

The fourth proportional to 909,085.21, 1,253,638.74 and 771,639.46 is: 1,064,099.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,085.21 : 1,253,638.74 = 771,639.46 : x
  2. Step 2: Convert to fraction form
    909,085.21/1,253,638.74 = 771,639.46/x
  3. Step 3: Cross multiply
    909,085.21x = 1,253,638.74 × 771,639.46
  4. Step 4: Simplify right side
    909,085.21x = 967,357,120,368.68
  5. Step 5: Solve for x
    x = 967,357,120,368.68/909,085.21
  6. Step 6: Final answer
    x = 1,064,099.50

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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.