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Finding the Fourth Proportional to 684,721,491.66, 944,835,942.11 and 383,323,307.31

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Solution

The fourth proportional to 684,721,491.66, 944,835,942.11 and 383,323,307.31 is: 528,941,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,721,491.66 : 944,835,942.11 = 383,323,307.31 : x
  2. Step 2: Convert to fraction form
    684,721,491.66/944,835,942.11 = 383,323,307.31/x
  3. Step 3: Cross multiply
    684,721,491.66x = 944,835,942.11 × 383,323,307.31
  4. Step 4: Simplify right side
    684,721,491.66x = 362,177,638,193,048,320
  5. Step 5: Solve for x
    x = 362,177,638,193,048,320/684,721,491.66
  6. Step 6: Final answer
    x = 528,941,536.97

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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.