Home / 763,533.18-1,053,688.46-419,400.95

Finding the Fourth Proportional to 763,533.18, 1,053,688.46 and 419,400.95

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Solution

The fourth proportional to 763,533.18, 1,053,688.46 and 419,400.95 is: 578,780.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,533.18 : 1,053,688.46 = 419,400.95 : x
  2. Step 2: Convert to fraction form
    763,533.18/1,053,688.46 = 419,400.95/x
  3. Step 3: Cross multiply
    763,533.18x = 1,053,688.46 × 419,400.95
  4. Step 4: Simplify right side
    763,533.18x = 441,917,933,762.59
  5. Step 5: Solve for x
    x = 441,917,933,762.59/763,533.18
  6. Step 6: Final answer
    x = 578,780.26

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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.