Home / 742,621.45-1,113,816-287,148.63

Finding the Fourth Proportional to 742,621.45, 1,113,816 and 287,148.63

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Solution

The fourth proportional to 742,621.45, 1,113,816 and 287,148.63 is: 430,678.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,621.45 : 1,113,816 = 287,148.63 : x
  2. Step 2: Convert to fraction form
    742,621.45/1,113,816 = 287,148.63/x
  3. Step 3: Cross multiply
    742,621.45x = 1,113,816 × 287,148.63
  4. Step 4: Simplify right side
    742,621.45x = 319,830,738,472.08
  5. Step 5: Solve for x
    x = 319,830,738,472.08/742,621.45
  6. Step 6: Final answer
    x = 430,678.02

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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.