Home / 421,578,000.72-581,838,739.56-242,927,130.96

Finding the Fourth Proportional to 421,578,000.72, 581,838,739.56 and 242,927,130.96

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Solution

The fourth proportional to 421,578,000.72, 581,838,739.56 and 242,927,130.96 is: 335,274,647.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,578,000.72 : 581,838,739.56 = 242,927,130.96 : x
  2. Step 2: Convert to fraction form
    421,578,000.72/581,838,739.56 = 242,927,130.96/x
  3. Step 3: Cross multiply
    421,578,000.72x = 581,838,739.56 × 242,927,130.96
  4. Step 4: Simplify right side
    421,578,000.72x = 141,344,415,682,693,440
  5. Step 5: Solve for x
    x = 141,344,415,682,693,440/421,578,000.72
  6. Step 6: Final answer
    x = 335,274,647.73

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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.