Home / 758,421-1,046,620.98-418,911.12

Finding the Fourth Proportional to 758,421, 1,046,620.98 and 418,911.12

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Solution

The fourth proportional to 758,421, 1,046,620.98 and 418,911.12 is: 578,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,421 : 1,046,620.98 = 418,911.12 : x
  2. Step 2: Convert to fraction form
    758,421/1,046,620.98 = 418,911.12/x
  3. Step 3: Cross multiply
    758,421x = 1,046,620.98 × 418,911.12
  4. Step 4: Simplify right side
    758,421x = 438,441,166,947.30
  5. Step 5: Solve for x
    x = 438,441,166,947.30/758,421
  6. Step 6: Final answer
    x = 578,097.35

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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.