Home / 915,248.96-1,261,643.48-642,551.84

Finding the Fourth Proportional to 915,248.96, 1,261,643.48 and 642,551.84

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Solution

The fourth proportional to 915,248.96, 1,261,643.48 and 642,551.84 is: 885,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,248.96 : 1,261,643.48 = 642,551.84 : x
  2. Step 2: Convert to fraction form
    915,248.96/1,261,643.48 = 642,551.84/x
  3. Step 3: Cross multiply
    915,248.96x = 1,261,643.48 × 642,551.84
  4. Step 4: Simplify right side
    915,248.96x = 810,671,339,498.00
  5. Step 5: Solve for x
    x = 810,671,339,498.00/915,248.96
  6. Step 6: Final answer
    x = 885,738.61

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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.