Home / 927,039.42-1,390,209.12-428,053.50

Finding the Fourth Proportional to 927,039.42, 1,390,209.12 and 428,053.50

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Solution

The fourth proportional to 927,039.42, 1,390,209.12 and 428,053.50 is: 641,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,039.42 : 1,390,209.12 = 428,053.50 : x
  2. Step 2: Convert to fraction form
    927,039.42/1,390,209.12 = 428,053.50/x
  3. Step 3: Cross multiply
    927,039.42x = 1,390,209.12 × 428,053.50
  4. Step 4: Simplify right side
    927,039.42x = 595,083,879,547.92
  5. Step 5: Solve for x
    x = 595,083,879,547.92/927,039.42
  6. Step 6: Final answer
    x = 641,918.64

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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.