Home / 739,175.10-1,020,063.12-399,643.36

Finding the Fourth Proportional to 739,175.10, 1,020,063.12 and 399,643.36

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Solution

The fourth proportional to 739,175.10, 1,020,063.12 and 399,643.36 is: 551,508.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,175.10 : 1,020,063.12 = 399,643.36 : x
  2. Step 2: Convert to fraction form
    739,175.10/1,020,063.12 = 399,643.36/x
  3. Step 3: Cross multiply
    739,175.10x = 1,020,063.12 × 399,643.36
  4. Step 4: Simplify right side
    739,175.10x = 407,661,452,688.88
  5. Step 5: Solve for x
    x = 407,661,452,688.88/739,175.10
  6. Step 6: Final answer
    x = 551,508.64

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1.5x scale

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.