Home / 642,025,562.16-961,403,486.40-423,011,916.48

Finding the Fourth Proportional to 642,025,562.16, 961,403,486.40 and 423,011,916.48

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Solution

The fourth proportional to 642,025,562.16, 961,403,486.40 and 423,011,916.48 is: 633,440,715.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,025,562.16 : 961,403,486.40 = 423,011,916.48 : x
  2. Step 2: Convert to fraction form
    642,025,562.16/961,403,486.40 = 423,011,916.48/x
  3. Step 3: Cross multiply
    642,025,562.16x = 961,403,486.40 × 423,011,916.48
  4. Step 4: Simplify right side
    642,025,562.16x = 406,685,131,292,617,600
  5. Step 5: Solve for x
    x = 406,685,131,292,617,600/642,025,562.16
  6. Step 6: Final answer
    x = 633,440,715.23

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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.