Home / 817,760.23-1,128,483.99-455,174.76

Finding the Fourth Proportional to 817,760.23, 1,128,483.99 and 455,174.76

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Solution

The fourth proportional to 817,760.23, 1,128,483.99 and 455,174.76 is: 628,127.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,760.23 : 1,128,483.99 = 455,174.76 : x
  2. Step 2: Convert to fraction form
    817,760.23/1,128,483.99 = 455,174.76/x
  3. Step 3: Cross multiply
    817,760.23x = 1,128,483.99 × 455,174.76
  4. Step 4: Simplify right side
    817,760.23x = 513,657,433,543.91
  5. Step 5: Solve for x
    x = 513,657,433,543.91/817,760.23
  6. Step 6: Final answer
    x = 628,127.19

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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.