Home / 1,521,116.64-2,100,131.28-977,461.92

Finding the Fourth Proportional to 1,521,116.64, 2,100,131.28 and 977,461.92

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Solution

The fourth proportional to 1,521,116.64, 2,100,131.28 and 977,461.92 is: 1,349,533.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521,116.64 : 2,100,131.28 = 977,461.92 : x
  2. Step 2: Convert to fraction form
    1,521,116.64/2,100,131.28 = 977,461.92/x
  3. Step 3: Cross multiply
    1,521,116.64x = 2,100,131.28 × 977,461.92
  4. Step 4: Simplify right side
    1,521,116.64x = 2,052,798,353,200.86
  5. Step 5: Solve for x
    x = 2,052,798,353,200.86/1,521,116.64
  6. Step 6: Final answer
    x = 1,349,533.82

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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.