Home / 1,390,550.76-2,085,330.42-631,756.53

Finding the Fourth Proportional to 1,390,550.76, 2,085,330.42 and 631,756.53

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Solution

The fourth proportional to 1,390,550.76, 2,085,330.42 and 631,756.53 is: 947,409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,550.76 : 2,085,330.42 = 631,756.53 : x
  2. Step 2: Convert to fraction form
    1,390,550.76/2,085,330.42 = 631,756.53/x
  3. Step 3: Cross multiply
    1,390,550.76x = 2,085,330.42 × 631,756.53
  4. Step 4: Simplify right side
    1,390,550.76x = 1,317,421,110,042.64
  5. Step 5: Solve for x
    x = 1,317,421,110,042.64/1,390,550.76
  6. Step 6: Final answer
    x = 947,409.58

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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.