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Finding the Fourth Proportional to 648,000.40, 973,037.40 and 438,566.80

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Solution

The fourth proportional to 648,000.40, 973,037.40 and 438,566.80 is: 658,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,000.40 : 973,037.40 = 438,566.80 : x
  2. Step 2: Convert to fraction form
    648,000.40/973,037.40 = 438,566.80/x
  3. Step 3: Cross multiply
    648,000.40x = 973,037.40 × 438,566.80
  4. Step 4: Simplify right side
    648,000.40x = 426,741,898,798.32
  5. Step 5: Solve for x
    x = 426,741,898,798.32/648,000.40
  6. Step 6: Final answer
    x = 658,551.91

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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.