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Finding the Fourth Proportional to 718,317.52, 990,247.80 and 565,089.37

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Solution

The fourth proportional to 718,317.52, 990,247.80 and 565,089.37 is: 779,012.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,317.52 : 990,247.80 = 565,089.37 : x
  2. Step 2: Convert to fraction form
    718,317.52/990,247.80 = 565,089.37/x
  3. Step 3: Cross multiply
    718,317.52x = 990,247.80 × 565,089.37
  4. Step 4: Simplify right side
    718,317.52x = 559,578,505,445.89
  5. Step 5: Solve for x
    x = 559,578,505,445.89/718,317.52
  6. Step 6: Final answer
    x = 779,012.75

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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.