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Finding the Fourth Proportional to 648,784.06, 895,347.34 and 358,410.60

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Solution

The fourth proportional to 648,784.06, 895,347.34 and 358,410.60 is: 494,620.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,784.06 : 895,347.34 = 358,410.60 : x
  2. Step 2: Convert to fraction form
    648,784.06/895,347.34 = 358,410.60/x
  3. Step 3: Cross multiply
    648,784.06x = 895,347.34 × 358,410.60
  4. Step 4: Simplify right side
    648,784.06x = 320,901,976,441.78
  5. Step 5: Solve for x
    x = 320,901,976,441.78/648,784.06
  6. Step 6: Final answer
    x = 494,620.63

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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.