Home / 989,031.53-1,364,790.47-553,391.06

Finding the Fourth Proportional to 989,031.53, 1,364,790.47 and 553,391.06

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Solution

The fourth proportional to 989,031.53, 1,364,790.47 and 553,391.06 is: 763,638.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,031.53 : 1,364,790.47 = 553,391.06 : x
  2. Step 2: Convert to fraction form
    989,031.53/1,364,790.47 = 553,391.06/x
  3. Step 3: Cross multiply
    989,031.53x = 1,364,790.47 × 553,391.06
  4. Step 4: Simplify right side
    989,031.53x = 755,262,835,280.29
  5. Step 5: Solve for x
    x = 755,262,835,280.29/989,031.53
  6. Step 6: Final answer
    x = 763,638.78

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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.