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Finding the Fourth Proportional to 601,643.98, 830,646.12 and 387,156.79

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Solution

The fourth proportional to 601,643.98, 830,646.12 and 387,156.79 is: 534,519.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,643.98 : 830,646.12 = 387,156.79 : x
  2. Step 2: Convert to fraction form
    601,643.98/830,646.12 = 387,156.79/x
  3. Step 3: Cross multiply
    601,643.98x = 830,646.12 × 387,156.79
  4. Step 4: Simplify right side
    601,643.98x = 321,590,285,445.16
  5. Step 5: Solve for x
    x = 321,590,285,445.16/601,643.98
  6. Step 6: Final answer
    x = 534,519.24

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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.