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Finding the Fourth Proportional to 680,985.76, 939,752.76 and 375,056.32

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Solution

The fourth proportional to 680,985.76, 939,752.76 and 375,056.32 is: 517,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,985.76 : 939,752.76 = 375,056.32 : x
  2. Step 2: Convert to fraction form
    680,985.76/939,752.76 = 375,056.32/x
  3. Step 3: Cross multiply
    680,985.76x = 939,752.76 × 375,056.32
  4. Step 4: Simplify right side
    680,985.76x = 352,460,211,875.44
  5. Step 5: Solve for x
    x = 352,460,211,875.44/680,985.76
  6. Step 6: Final answer
    x = 517,573.54

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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.