Home / 1,392,000.80-2,085,376.80-715,780.40

Finding the Fourth Proportional to 1,392,000.80, 2,085,376.80 and 715,780.40

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Solution

The fourth proportional to 1,392,000.80, 2,085,376.80 and 715,780.40 is: 1,072,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,000.80 : 2,085,376.80 = 715,780.40 : x
  2. Step 2: Convert to fraction form
    1,392,000.80/2,085,376.80 = 715,780.40/x
  3. Step 3: Cross multiply
    1,392,000.80x = 2,085,376.80 × 715,780.40
  4. Step 4: Simplify right side
    1,392,000.80x = 1,492,671,840,054.72
  5. Step 5: Solve for x
    x = 1,492,671,840,054.72/1,392,000.80
  6. Step 6: Final answer
    x = 1,072,321.11

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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.