Home / 1,020,326.72-1,407,670.56-638,208.32

Finding the Fourth Proportional to 1,020,326.72, 1,407,670.56 and 638,208.32

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Solution

The fourth proportional to 1,020,326.72, 1,407,670.56 and 638,208.32 is: 880,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,326.72 : 1,407,670.56 = 638,208.32 : x
  2. Step 2: Convert to fraction form
    1,020,326.72/1,407,670.56 = 638,208.32/x
  3. Step 3: Cross multiply
    1,020,326.72x = 1,407,670.56 × 638,208.32
  4. Step 4: Simplify right side
    1,020,326.72x = 898,387,063,211.06
  5. Step 5: Solve for x
    x = 898,387,063,211.06/1,020,326.72
  6. Step 6: Final answer
    x = 880,489.60

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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.