Home / 989,975.07-1,484,988.24-316,055.81

Finding the Fourth Proportional to 989,975.07, 1,484,988.24 and 316,055.81

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Solution

The fourth proportional to 989,975.07, 1,484,988.24 and 316,055.81 is: 474,091.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,975.07 : 1,484,988.24 = 316,055.81 : x
  2. Step 2: Convert to fraction form
    989,975.07/1,484,988.24 = 316,055.81/x
  3. Step 3: Cross multiply
    989,975.07x = 1,484,988.24 × 316,055.81
  4. Step 4: Simplify right side
    989,975.07x = 469,339,153,608.73
  5. Step 5: Solve for x
    x = 469,339,153,608.73/989,975.07
  6. Step 6: Final answer
    x = 474,091.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.