Home / 821,426.10-1,134,344.45-776,696.48

Finding the Fourth Proportional to 821,426.10, 1,134,344.45 and 776,696.48

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Solution

The fourth proportional to 821,426.10, 1,134,344.45 and 776,696.48 is: 1,072,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,426.10 : 1,134,344.45 = 776,696.48 : x
  2. Step 2: Convert to fraction form
    821,426.10/1,134,344.45 = 776,696.48/x
  3. Step 3: Cross multiply
    821,426.10x = 1,134,344.45 × 776,696.48
  4. Step 4: Simplify right side
    821,426.10x = 881,041,341,946.35
  5. Step 5: Solve for x
    x = 881,041,341,946.35/821,426.10
  6. Step 6: Final answer
    x = 1,072,575.30

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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.