Home / 1,421,612.80-2,137,084.80-1,003,782.40

Finding the Fourth Proportional to 1,421,612.80, 2,137,084.80 and 1,003,782.40

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Solution

The fourth proportional to 1,421,612.80, 2,137,084.80 and 1,003,782.40 is: 1,508,967.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,612.80 : 2,137,084.80 = 1,003,782.40 : x
  2. Step 2: Convert to fraction form
    1,421,612.80/2,137,084.80 = 1,003,782.40/x
  3. Step 3: Cross multiply
    1,421,612.80x = 2,137,084.80 × 1,003,782.40
  4. Step 4: Simplify right side
    1,421,612.80x = 2,145,168,109,547.52
  5. Step 5: Solve for x
    x = 2,145,168,109,547.52/1,421,612.80
  6. Step 6: Final answer
    x = 1,508,967.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.