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Finding the Fourth Proportional to 561,276.90, 774,817.47 and 357,607.08

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Solution

The fourth proportional to 561,276.90, 774,817.47 and 357,607.08 is: 493,660.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,276.90 : 774,817.47 = 357,607.08 : x
  2. Step 2: Convert to fraction form
    561,276.90/774,817.47 = 357,607.08/x
  3. Step 3: Cross multiply
    561,276.90x = 774,817.47 × 357,607.08
  4. Step 4: Simplify right side
    561,276.90x = 277,080,212,979.69
  5. Step 5: Solve for x
    x = 277,080,212,979.69/561,276.90
  6. Step 6: Final answer
    x = 493,660.46

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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.