Home / 638,984.40-958,312.52-189,598.98

Finding the Fourth Proportional to 638,984.40, 958,312.52 and 189,598.98

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Solution

The fourth proportional to 638,984.40, 958,312.52 and 189,598.98 is: 284,349.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,984.40 : 958,312.52 = 189,598.98 : x
  2. Step 2: Convert to fraction form
    638,984.40/958,312.52 = 189,598.98/x
  3. Step 3: Cross multiply
    638,984.40x = 958,312.52 × 189,598.98
  4. Step 4: Simplify right side
    638,984.40x = 181,695,076,313.23
  5. Step 5: Solve for x
    x = 181,695,076,313.23/638,984.40
  6. Step 6: Final answer
    x = 284,349.78

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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.