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Finding the Fourth Proportional to 562,985.76, 776,971.80 and 308,373.60

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Solution

The fourth proportional to 562,985.76, 776,971.80 and 308,373.60 is: 425,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,985.76 : 776,971.80 = 308,373.60 : x
  2. Step 2: Convert to fraction form
    562,985.76/776,971.80 = 308,373.60/x
  3. Step 3: Cross multiply
    562,985.76x = 776,971.80 × 308,373.60
  4. Step 4: Simplify right side
    562,985.76x = 239,597,591,064.48
  5. Step 5: Solve for x
    x = 239,597,591,064.48/562,985.76
  6. Step 6: Final answer
    x = 425,583.75

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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.