Home / 828,421.50-1,240,639.32-472,356.06

Finding the Fourth Proportional to 828,421.50, 1,240,639.32 and 472,356.06

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Solution

The fourth proportional to 828,421.50, 1,240,639.32 and 472,356.06 is: 707,397.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,421.50 : 1,240,639.32 = 472,356.06 : x
  2. Step 2: Convert to fraction form
    828,421.50/1,240,639.32 = 472,356.06/x
  3. Step 3: Cross multiply
    828,421.50x = 1,240,639.32 × 472,356.06
  4. Step 4: Simplify right side
    828,421.50x = 586,023,501,076.28
  5. Step 5: Solve for x
    x = 586,023,501,076.28/828,421.50
  6. Step 6: Final answer
    x = 707,397.75

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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.