Home / 817,607.78-1,128,298.74-455,117.27

Finding the Fourth Proportional to 817,607.78, 1,128,298.74 and 455,117.27

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Solution

The fourth proportional to 817,607.78, 1,128,298.74 and 455,117.27 is: 628,061.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,607.78 : 1,128,298.74 = 455,117.27 : x
  2. Step 2: Convert to fraction form
    817,607.78/1,128,298.74 = 455,117.27/x
  3. Step 3: Cross multiply
    817,607.78x = 1,128,298.74 × 455,117.27
  4. Step 4: Simplify right side
    817,607.78x = 513,508,243,851.77
  5. Step 5: Solve for x
    x = 513,508,243,851.77/817,607.78
  6. Step 6: Final answer
    x = 628,061.84

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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.