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Finding the Fourth Proportional to 764,810.61, 1,055,570.75 and 442,698.32

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Solution

The fourth proportional to 764,810.61, 1,055,570.75 and 442,698.32 is: 611,000.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,810.61 : 1,055,570.75 = 442,698.32 : x
  2. Step 2: Convert to fraction form
    764,810.61/1,055,570.75 = 442,698.32/x
  3. Step 3: Cross multiply
    764,810.61x = 1,055,570.75 × 442,698.32
  4. Step 4: Simplify right side
    764,810.61x = 467,299,397,666.14
  5. Step 5: Solve for x
    x = 467,299,397,666.14/764,810.61
  6. Step 6: Final answer
    x = 611,000.15

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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.