Home / 817,819.61-1,128,575.63-455,240.93

Finding the Fourth Proportional to 817,819.61, 1,128,575.63 and 455,240.93

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Solution

The fourth proportional to 817,819.61, 1,128,575.63 and 455,240.93 is: 628,223.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,819.61 : 1,128,575.63 = 455,240.93 : x
  2. Step 2: Convert to fraction form
    817,819.61/1,128,575.63 = 455,240.93/x
  3. Step 3: Cross multiply
    817,819.61x = 1,128,575.63 × 455,240.93
  4. Step 4: Simplify right side
    817,819.61x = 513,773,814,871.76
  5. Step 5: Solve for x
    x = 513,773,814,871.76/817,819.61
  6. Step 6: Final answer
    x = 628,223.89

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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.