Home / 651,276.80-976,915.20-385,337.60

Finding the Fourth Proportional to 651,276.80, 976,915.20 and 385,337.60

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Solution

The fourth proportional to 651,276.80, 976,915.20 and 385,337.60 is: 578,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,276.80 : 976,915.20 = 385,337.60 : x
  2. Step 2: Convert to fraction form
    651,276.80/976,915.20 = 385,337.60/x
  3. Step 3: Cross multiply
    651,276.80x = 976,915.20 × 385,337.60
  4. Step 4: Simplify right side
    651,276.80x = 376,442,158,571.52
  5. Step 5: Solve for x
    x = 376,442,158,571.52/651,276.80
  6. Step 6: Final answer
    x = 578,006.40

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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.