Home / 1,137,742.72-1,570,054.88-628,434.16

Finding the Fourth Proportional to 1,137,742.72, 1,570,054.88 and 628,434.16

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Solution

The fourth proportional to 1,137,742.72, 1,570,054.88 and 628,434.16 is: 867,222.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,742.72 : 1,570,054.88 = 628,434.16 : x
  2. Step 2: Convert to fraction form
    1,137,742.72/1,570,054.88 = 628,434.16/x
  3. Step 3: Cross multiply
    1,137,742.72x = 1,570,054.88 × 628,434.16
  4. Step 4: Simplify right side
    1,137,742.72x = 986,676,119,666.70
  5. Step 5: Solve for x
    x = 986,676,119,666.70/1,137,742.72
  6. Step 6: Final answer
    x = 867,222.53

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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.