Home / 999,641.95-1,378,071.09-712,663.81

Finding the Fourth Proportional to 999,641.95, 1,378,071.09 and 712,663.81

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Solution

The fourth proportional to 999,641.95, 1,378,071.09 and 712,663.81 is: 982,453.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,641.95 : 1,378,071.09 = 712,663.81 : x
  2. Step 2: Convert to fraction form
    999,641.95/1,378,071.09 = 712,663.81/x
  3. Step 3: Cross multiply
    999,641.95x = 1,378,071.09 × 712,663.81
  4. Step 4: Simplify right side
    999,641.95x = 982,101,390,005.08
  5. Step 5: Solve for x
    x = 982,101,390,005.08/999,641.95
  6. Step 6: Final answer
    x = 982,453.16

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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.