Home / 763,289.83-1,053,292.05-419,123.35

Finding the Fourth Proportional to 763,289.83, 1,053,292.05 and 419,123.35

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Solution

The fourth proportional to 763,289.83, 1,053,292.05 and 419,123.35 is: 578,363.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,289.83 : 1,053,292.05 = 419,123.35 : x
  2. Step 2: Convert to fraction form
    763,289.83/1,053,292.05 = 419,123.35/x
  3. Step 3: Cross multiply
    763,289.83x = 1,053,292.05 × 419,123.35
  4. Step 4: Simplify right side
    763,289.83x = 441,459,287,916.22
  5. Step 5: Solve for x
    x = 441,459,287,916.22/763,289.83
  6. Step 6: Final answer
    x = 578,363.91

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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.