Home / 776,841.36-1,072,199.88-490,168.32

Finding the Fourth Proportional to 776,841.36, 1,072,199.88 and 490,168.32

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Solution

The fourth proportional to 776,841.36, 1,072,199.88 and 490,168.32 is: 676,532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,841.36 : 1,072,199.88 = 490,168.32 : x
  2. Step 2: Convert to fraction form
    776,841.36/1,072,199.88 = 490,168.32/x
  3. Step 3: Cross multiply
    776,841.36x = 1,072,199.88 × 490,168.32
  4. Step 4: Simplify right side
    776,841.36x = 525,558,413,883.80
  5. Step 5: Solve for x
    x = 525,558,413,883.80/776,841.36
  6. Step 6: Final answer
    x = 676,532.48

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Double scale
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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.