Home / 557,979.20-770,008.08-316,307.36

Finding the Fourth Proportional to 557,979.20, 770,008.08 and 316,307.36

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Solution

The fourth proportional to 557,979.20, 770,008.08 and 316,307.36 is: 436,502.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,979.20 : 770,008.08 = 316,307.36 : x
  2. Step 2: Convert to fraction form
    557,979.20/770,008.08 = 316,307.36/x
  3. Step 3: Cross multiply
    557,979.20x = 770,008.08 × 316,307.36
  4. Step 4: Simplify right side
    557,979.20x = 243,559,222,963.47
  5. Step 5: Solve for x
    x = 243,559,222,963.47/557,979.20
  6. Step 6: Final answer
    x = 436,502.33

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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.