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Finding the Fourth Proportional to 654,674.18, 903,314.88 and 382,689.47

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Solution

The fourth proportional to 654,674.18, 903,314.88 and 382,689.47 is: 528,032.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,674.18 : 903,314.88 = 382,689.47 : x
  2. Step 2: Convert to fraction form
    654,674.18/903,314.88 = 382,689.47/x
  3. Step 3: Cross multiply
    654,674.18x = 903,314.88 × 382,689.47
  4. Step 4: Simplify right side
    654,674.18x = 345,689,088,153.74
  5. Step 5: Solve for x
    x = 345,689,088,153.74/654,674.18
  6. Step 6: Final answer
    x = 528,032.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.