Home / 642,025,565.94-961,403,491.06-423,011,919.76

Finding the Fourth Proportional to 642,025,565.94, 961,403,491.06 and 423,011,919.76

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Solution

The fourth proportional to 642,025,565.94, 961,403,491.06 and 423,011,919.76 is: 633,440,719.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,565.94 : 961,403,491.06 = 423,011,919.76 : x
  2. Step 2: Convert to fraction form
    642,025,565.94/961,403,491.06 = 423,011,919.76/x
  3. Step 3: Cross multiply
    642,025,565.94x = 961,403,491.06 × 423,011,919.76
  4. Step 4: Simplify right side
    642,025,565.94x = 406,685,136,417,256,576
  5. Step 5: Solve for x
    x = 406,685,136,417,256,576/642,025,565.94
  6. Step 6: Final answer
    x = 633,440,719.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.