Home / 1,388,432.70-1,916,051.22-815,482.44

Finding the Fourth Proportional to 1,388,432.70, 1,916,051.22 and 815,482.44

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Solution

The fourth proportional to 1,388,432.70, 1,916,051.22 and 815,482.44 is: 1,125,374.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,432.70 : 1,916,051.22 = 815,482.44 : x
  2. Step 2: Convert to fraction form
    1,388,432.70/1,916,051.22 = 815,482.44/x
  3. Step 3: Cross multiply
    1,388,432.70x = 1,916,051.22 × 815,482.44
  4. Step 4: Simplify right side
    1,388,432.70x = 1,562,506,124,050.58
  5. Step 5: Solve for x
    x = 1,562,506,124,050.58/1,388,432.70
  6. Step 6: Final answer
    x = 1,125,374.05

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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.