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Finding the Fourth Proportional to 611,573.60, 917,360.40 and 372,425.15

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Solution

The fourth proportional to 611,573.60, 917,360.40 and 372,425.15 is: 558,637.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,573.60 : 917,360.40 = 372,425.15 : x
  2. Step 2: Convert to fraction form
    611,573.60/917,360.40 = 372,425.15/x
  3. Step 3: Cross multiply
    611,573.60x = 917,360.40 × 372,425.15
  4. Step 4: Simplify right side
    611,573.60x = 341,648,084,574.06
  5. Step 5: Solve for x
    x = 341,648,084,574.06/611,573.60
  6. Step 6: Final answer
    x = 558,637.73

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.