Home / 515,077.84-772,829.34-278,141.50

Finding the Fourth Proportional to 515,077.84, 772,829.34 and 278,141.50

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Solution

The fourth proportional to 515,077.84, 772,829.34 and 278,141.50 is: 417,327.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,077.84 : 772,829.34 = 278,141.50 : x
  2. Step 2: Convert to fraction form
    515,077.84/772,829.34 = 278,141.50/x
  3. Step 3: Cross multiply
    515,077.84x = 772,829.34 × 278,141.50
  4. Step 4: Simplify right side
    515,077.84x = 214,955,911,871.61
  5. Step 5: Solve for x
    x = 214,955,911,871.61/515,077.84
  6. Step 6: Final answer
    x = 417,327.04

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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.