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Finding the Fourth Proportional to 553,323.44, 761,978.39 and 480,693.17

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Solution

The fourth proportional to 553,323.44, 761,978.39 and 480,693.17 is: 661,959.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,323.44 : 761,978.39 = 480,693.17 : x
  2. Step 2: Convert to fraction form
    553,323.44/761,978.39 = 480,693.17/x
  3. Step 3: Cross multiply
    553,323.44x = 761,978.39 × 480,693.17
  4. Step 4: Simplify right side
    553,323.44x = 366,277,801,547.24
  5. Step 5: Solve for x
    x = 366,277,801,547.24/553,323.44
  6. Step 6: Final answer
    x = 661,959.68

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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.