Home / 421,399,420.47-581,532,444.42-233,240,783.04

Finding the Fourth Proportional to 421,399,420.47, 581,532,444.42 and 233,240,783.04

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Solution

The fourth proportional to 421,399,420.47, 581,532,444.42 and 233,240,783.04 is: 321,872,969.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,399,420.47 : 581,532,444.42 = 233,240,783.04 : x
  2. Step 2: Convert to fraction form
    421,399,420.47/581,532,444.42 = 233,240,783.04/x
  3. Step 3: Cross multiply
    421,399,420.47x = 581,532,444.42 × 233,240,783.04
  4. Step 4: Simplify right side
    421,399,420.47x = 135,637,082,699,686,064
  5. Step 5: Solve for x
    x = 135,637,082,699,686,064/421,399,420.47
  6. Step 6: Final answer
    x = 321,872,969.23

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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.