Home / 1,570,818.80-2,167,045.44-989,689.16

Finding the Fourth Proportional to 1,570,818.80, 2,167,045.44 and 989,689.16

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Solution

The fourth proportional to 1,570,818.80, 2,167,045.44 and 989,689.16 is: 1,365,339.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,570,818.80 : 2,167,045.44 = 989,689.16 : x
  2. Step 2: Convert to fraction form
    1,570,818.80/2,167,045.44 = 989,689.16/x
  3. Step 3: Cross multiply
    1,570,818.80x = 2,167,045.44 × 989,689.16
  4. Step 4: Simplify right side
    1,570,818.80x = 2,144,701,381,195.43
  5. Step 5: Solve for x
    x = 2,144,701,381,195.43/1,570,818.80
  6. Step 6: Final answer
    x = 1,365,339.77

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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.