Home / 719,780.58-993,312.72-397,511.28

Finding the Fourth Proportional to 719,780.58, 993,312.72 and 397,511.28

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Solution

The fourth proportional to 719,780.58, 993,312.72 and 397,511.28 is: 548,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,780.58 : 993,312.72 = 397,511.28 : x
  2. Step 2: Convert to fraction form
    719,780.58/993,312.72 = 397,511.28/x
  3. Step 3: Cross multiply
    719,780.58x = 993,312.72 × 397,511.28
  4. Step 4: Simplify right side
    719,780.58x = 394,853,010,767.48
  5. Step 5: Solve for x
    x = 394,853,010,767.48/719,780.58
  6. Step 6: Final answer
    x = 548,574.14

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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.