Home / 915,756.48-1,263,743.95-507,920.78

Finding the Fourth Proportional to 915,756.48, 1,263,743.95 and 507,920.78

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Solution

The fourth proportional to 915,756.48, 1,263,743.95 and 507,920.78 is: 700,930.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,756.48 : 1,263,743.95 = 507,920.78 : x
  2. Step 2: Convert to fraction form
    915,756.48/1,263,743.95 = 507,920.78/x
  3. Step 3: Cross multiply
    915,756.48x = 1,263,743.95 × 507,920.78
  4. Step 4: Simplify right side
    915,756.48x = 641,881,812,804.28
  5. Step 5: Solve for x
    x = 641,881,812,804.28/915,756.48
  6. Step 6: Final answer
    x = 700,930.68

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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.