Home / 1,382,913.42-1,908,281.07-771,008.64

Finding the Fourth Proportional to 1,382,913.42, 1,908,281.07 and 771,008.64

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Solution

The fourth proportional to 1,382,913.42, 1,908,281.07 and 771,008.64 is: 1,063,914.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,913.42 : 1,908,281.07 = 771,008.64 : x
  2. Step 2: Convert to fraction form
    1,382,913.42/1,908,281.07 = 771,008.64/x
  3. Step 3: Cross multiply
    1,382,913.42x = 1,908,281.07 × 771,008.64
  4. Step 4: Simplify right side
    1,382,913.42x = 1,471,301,192,518.44
  5. Step 5: Solve for x
    x = 1,471,301,192,518.44/1,382,913.42
  6. Step 6: Final answer
    x = 1,063,914.18

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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.