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Finding the Fourth Proportional to 717,170.57, 989,731.76 and 407,094.98

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Solution

The fourth proportional to 717,170.57, 989,731.76 and 407,094.98 is: 561,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,170.57 : 989,731.76 = 407,094.98 : x
  2. Step 2: Convert to fraction form
    717,170.57/989,731.76 = 407,094.98/x
  3. Step 3: Cross multiply
    717,170.57x = 989,731.76 × 407,094.98
  4. Step 4: Simplify right side
    717,170.57x = 402,914,831,042.57
  5. Step 5: Solve for x
    x = 402,914,831,042.57/717,170.57
  6. Step 6: Final answer
    x = 561,811.72

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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.