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Finding the Fourth Proportional to 560,090.52, 772,970.76 and 318,448.92

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Solution

The fourth proportional to 560,090.52, 772,970.76 and 318,448.92 is: 439,485.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,090.52 : 772,970.76 = 318,448.92 : x
  2. Step 2: Convert to fraction form
    560,090.52/772,970.76 = 318,448.92/x
  3. Step 3: Cross multiply
    560,090.52x = 772,970.76 × 318,448.92
  4. Step 4: Simplify right side
    560,090.52x = 246,151,703,713.58
  5. Step 5: Solve for x
    x = 246,151,703,713.58/560,090.52
  6. Step 6: Final answer
    x = 439,485.57

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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.