Home / 641,946.41-885,875.20-355,460.35

Finding the Fourth Proportional to 641,946.41, 885,875.20 and 355,460.35

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Solution

The fourth proportional to 641,946.41, 885,875.20 and 355,460.35 is: 490,529.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,946.41 : 885,875.20 = 355,460.35 : x
  2. Step 2: Convert to fraction form
    641,946.41/885,875.20 = 355,460.35/x
  3. Step 3: Cross multiply
    641,946.41x = 885,875.20 × 355,460.35
  4. Step 4: Simplify right side
    641,946.41x = 314,893,502,441.64
  5. Step 5: Solve for x
    x = 314,893,502,441.64/641,946.41
  6. Step 6: Final answer
    x = 490,529.27

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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.