Home / 760,105.60-1,139,445.60-287,108.80

Finding the Fourth Proportional to 760,105.60, 1,139,445.60 and 287,108.80

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Solution

The fourth proportional to 760,105.60, 1,139,445.60 and 287,108.80 is: 430,393.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    760,105.60 : 1,139,445.60 = 287,108.80 : x
  2. Step 2: Convert to fraction form
    760,105.60/1,139,445.60 = 287,108.80/x
  3. Step 3: Cross multiply
    760,105.60x = 1,139,445.60 × 287,108.80
  4. Step 4: Simplify right side
    760,105.60x = 327,144,858,881.28
  5. Step 5: Solve for x
    x = 327,144,858,881.28/760,105.60
  6. Step 6: Final answer
    x = 430,393.96

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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.