Home / 920,085.17-1,269,628.47-678,497.81

Finding the Fourth Proportional to 920,085.17, 1,269,628.47 and 678,497.81

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Solution

The fourth proportional to 920,085.17, 1,269,628.47 and 678,497.81 is: 936,261.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,085.17 : 1,269,628.47 = 678,497.81 : x
  2. Step 2: Convert to fraction form
    920,085.17/1,269,628.47 = 678,497.81/x
  3. Step 3: Cross multiply
    920,085.17x = 1,269,628.47 × 678,497.81
  4. Step 4: Simplify right side
    920,085.17x = 861,440,130,060.51
  5. Step 5: Solve for x
    x = 861,440,130,060.51/920,085.17
  6. Step 6: Final answer
    x = 936,261.30

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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.