Home / 927,063.38-1,390,407.80-645,316.72

Finding the Fourth Proportional to 927,063.38, 1,390,407.80 and 645,316.72

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Solution

The fourth proportional to 927,063.38, 1,390,407.80 and 645,316.72 is: 967,844.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,063.38 : 1,390,407.80 = 645,316.72 : x
  2. Step 2: Convert to fraction form
    927,063.38/1,390,407.80 = 645,316.72/x
  3. Step 3: Cross multiply
    927,063.38x = 1,390,407.80 × 645,316.72
  4. Step 4: Simplify right side
    927,063.38x = 897,253,407,521.72
  5. Step 5: Solve for x
    x = 897,253,407,521.72/927,063.38
  6. Step 6: Final answer
    x = 967,844.73

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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.