Home / 519,499,987.71-716,981,307.06-318,521,309.57

Finding the Fourth Proportional to 519,499,987.71, 716,981,307.06 and 318,521,309.57

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Solution

The fourth proportional to 519,499,987.71, 716,981,307.06 and 318,521,309.57 is: 439,603,138.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,499,987.71 : 716,981,307.06 = 318,521,309.57 : x
  2. Step 2: Convert to fraction form
    519,499,987.71/716,981,307.06 = 318,521,309.57/x
  3. Step 3: Cross multiply
    519,499,987.71x = 716,981,307.06 × 318,521,309.57
  4. Step 4: Simplify right side
    519,499,987.71x = 228,373,824,858,376,576
  5. Step 5: Solve for x
    x = 228,373,824,858,376,576/519,499,987.71
  6. Step 6: Final answer
    x = 439,603,138.13

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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.