Home / 758,730.54-1,047,069.39-419,220.78

Finding the Fourth Proportional to 758,730.54, 1,047,069.39 and 419,220.78

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Solution

The fourth proportional to 758,730.54, 1,047,069.39 and 419,220.78 is: 578,536.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,730.54 : 1,047,069.39 = 419,220.78 : x
  2. Step 2: Convert to fraction form
    758,730.54/1,047,069.39 = 419,220.78/x
  3. Step 3: Cross multiply
    758,730.54x = 1,047,069.39 × 419,220.78
  4. Step 4: Simplify right side
    758,730.54x = 438,953,246,389.92
  5. Step 5: Solve for x
    x = 438,953,246,389.92/758,730.54
  6. Step 6: Final answer
    x = 578,536.41

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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.