Home / 631,290.95-870,054.91-477,961.76

Finding the Fourth Proportional to 631,290.95, 870,054.91 and 477,961.76

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Solution

The fourth proportional to 631,290.95, 870,054.91 and 477,961.76 is: 658,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,290.95 : 870,054.91 = 477,961.76 : x
  2. Step 2: Convert to fraction form
    631,290.95/870,054.91 = 477,961.76/x
  3. Step 3: Cross multiply
    631,290.95x = 870,054.91 × 477,961.76
  4. Step 4: Simplify right side
    631,290.95x = 415,852,976,080.24
  5. Step 5: Solve for x
    x = 415,852,976,080.24/631,290.95
  6. Step 6: Final answer
    x = 658,734.26

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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.