Home / 780,678.48-1,077,633.60-508,812.60

Finding the Fourth Proportional to 780,678.48, 1,077,633.60 and 508,812.60

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Solution

The fourth proportional to 780,678.48, 1,077,633.60 and 508,812.60 is: 702,355.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,678.48 : 1,077,633.60 = 508,812.60 : x
  2. Step 2: Convert to fraction form
    780,678.48/1,077,633.60 = 508,812.60/x
  3. Step 3: Cross multiply
    780,678.48x = 1,077,633.60 × 508,812.60
  4. Step 4: Simplify right side
    780,678.48x = 548,313,553,863.36
  5. Step 5: Solve for x
    x = 548,313,553,863.36/780,678.48
  6. Step 6: Final answer
    x = 702,355.15

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1.5x scale

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.