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Finding the Fourth Proportional to 519,959.79, 717,542.53 and 290,538.02

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Solution

The fourth proportional to 519,959.79, 717,542.53 and 290,538.02 is: 400,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,959.79 : 717,542.53 = 290,538.02 : x
  2. Step 2: Convert to fraction form
    519,959.79/717,542.53 = 290,538.02/x
  3. Step 3: Cross multiply
    519,959.79x = 717,542.53 × 290,538.02
  4. Step 4: Simplify right side
    519,959.79x = 208,473,385,931.99
  5. Step 5: Solve for x
    x = 208,473,385,931.99/519,959.79
  6. Step 6: Final answer
    x = 400,941.36

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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.