Home / 1,353,471.42-1,867,666.36-780,400.88

Finding the Fourth Proportional to 1,353,471.42, 1,867,666.36 and 780,400.88

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Solution

The fourth proportional to 1,353,471.42, 1,867,666.36 and 780,400.88 is: 1,076,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,471.42 : 1,867,666.36 = 780,400.88 : x
  2. Step 2: Convert to fraction form
    1,353,471.42/1,867,666.36 = 780,400.88/x
  3. Step 3: Cross multiply
    1,353,471.42x = 1,867,666.36 × 780,400.88
  4. Step 4: Simplify right side
    1,353,471.42x = 1,457,528,468,068.06
  5. Step 5: Solve for x
    x = 1,457,528,468,068.06/1,353,471.42
  6. Step 6: Final answer
    x = 1,076,881.60

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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.