Home / 421,399,421.47-581,532,445.80-233,240,784.04

Finding the Fourth Proportional to 421,399,421.47, 581,532,445.80 and 233,240,784.04

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Solution

The fourth proportional to 421,399,421.47, 581,532,445.80 and 233,240,784.04 is: 321,872,970.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,399,421.47 : 581,532,445.80 = 233,240,784.04 : x
  2. Step 2: Convert to fraction form
    421,399,421.47/581,532,445.80 = 233,240,784.04/x
  3. Step 3: Cross multiply
    421,399,421.47x = 581,532,445.80 × 233,240,784.04
  4. Step 4: Simplify right side
    421,399,421.47x = 135,637,083,603,090,784
  5. Step 5: Solve for x
    x = 135,637,083,603,090,784/421,399,421.47
  6. Step 6: Final answer
    x = 321,872,970.61

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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.