Home / 651,323.20-976,984.80-402,491.20

Finding the Fourth Proportional to 651,323.20, 976,984.80 and 402,491.20

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Solution

The fourth proportional to 651,323.20, 976,984.80 and 402,491.20 is: 603,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,323.20 : 976,984.80 = 402,491.20 : x
  2. Step 2: Convert to fraction form
    651,323.20/976,984.80 = 402,491.20/x
  3. Step 3: Cross multiply
    651,323.20x = 976,984.80 × 402,491.20
  4. Step 4: Simplify right side
    651,323.20x = 393,227,784,533.76
  5. Step 5: Solve for x
    x = 393,227,784,533.76/651,323.20
  6. Step 6: Final answer
    x = 603,736.80

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Double scale
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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.