Home / 788,440.80-1,182,661.20-389,143.20

Finding the Fourth Proportional to 788,440.80, 1,182,661.20 and 389,143.20

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Solution

The fourth proportional to 788,440.80, 1,182,661.20 and 389,143.20 is: 583,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,440.80 : 1,182,661.20 = 389,143.20 : x
  2. Step 2: Convert to fraction form
    788,440.80/1,182,661.20 = 389,143.20/x
  3. Step 3: Cross multiply
    788,440.80x = 1,182,661.20 × 389,143.20
  4. Step 4: Simplify right side
    788,440.80x = 460,224,563,883.84
  5. Step 5: Solve for x
    x = 460,224,563,883.84/788,440.80
  6. Step 6: Final answer
    x = 583,714.80

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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.