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Finding the Fourth Proportional to 560,036.72, 772,998 and 318,460.88

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Solution

The fourth proportional to 560,036.72, 772,998 and 318,460.88 is: 439,559.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,036.72 : 772,998 = 318,460.88 : x
  2. Step 2: Convert to fraction form
    560,036.72/772,998 = 318,460.88/x
  3. Step 3: Cross multiply
    560,036.72x = 772,998 × 318,460.88
  4. Step 4: Simplify right side
    560,036.72x = 246,169,623,318.24
  5. Step 5: Solve for x
    x = 246,169,623,318.24/560,036.72
  6. Step 6: Final answer
    x = 439,559.79

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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.