Home / 685,124,436.81-945,472,422.53-371,858,715.37

Finding the Fourth Proportional to 685,124,436.81, 945,472,422.53 and 371,858,715.37

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Solution

The fourth proportional to 685,124,436.81, 945,472,422.53 and 371,858,715.37 is: 513,165,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,124,436.81 : 945,472,422.53 = 371,858,715.37 : x
  2. Step 2: Convert to fraction form
    685,124,436.81/945,472,422.53 = 371,858,715.37/x
  3. Step 3: Cross multiply
    685,124,436.81x = 945,472,422.53 × 371,858,715.37
  4. Step 4: Simplify right side
    685,124,436.81x = 351,582,160,459,767,616
  5. Step 5: Solve for x
    x = 351,582,160,459,767,616/685,124,436.81
  6. Step 6: Final answer
    x = 513,165,407.00

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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.