Home / 977,390.56-1,347,999.19-687,960.24

Finding the Fourth Proportional to 977,390.56, 1,347,999.19 and 687,960.24

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Solution

The fourth proportional to 977,390.56, 1,347,999.19 and 687,960.24 is: 948,822.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,390.56 : 1,347,999.19 = 687,960.24 : x
  2. Step 2: Convert to fraction form
    977,390.56/1,347,999.19 = 687,960.24/x
  3. Step 3: Cross multiply
    977,390.56x = 1,347,999.19 × 687,960.24
  4. Step 4: Simplify right side
    977,390.56x = 927,369,852,805.94
  5. Step 5: Solve for x
    x = 927,369,852,805.94/977,390.56
  6. Step 6: Final answer
    x = 948,822.19

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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.