Home / 641,443.28-885,178.44-354,946.16

Finding the Fourth Proportional to 641,443.28, 885,178.44 and 354,946.16

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Solution

The fourth proportional to 641,443.28, 885,178.44 and 354,946.16 is: 489,818.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,443.28 : 885,178.44 = 354,946.16 : x
  2. Step 2: Convert to fraction form
    641,443.28/885,178.44 = 354,946.16/x
  3. Step 3: Cross multiply
    641,443.28x = 885,178.44 × 354,946.16
  4. Step 4: Simplify right side
    641,443.28x = 314,190,688,192.79
  5. Step 5: Solve for x
    x = 314,190,688,192.79/641,443.28
  6. Step 6: Final answer
    x = 489,818.35

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Double scale
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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.