Home / 428,017,132.98-640,935,795.06-282,008,036.16

Finding the Fourth Proportional to 428,017,132.98, 640,935,795.06 and 282,008,036.16

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Solution

The fourth proportional to 428,017,132.98, 640,935,795.06 and 282,008,036.16 is: 422,293,947.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,017,132.98 : 640,935,795.06 = 282,008,036.16 : x
  2. Step 2: Convert to fraction form
    428,017,132.98/640,935,795.06 = 282,008,036.16/x
  3. Step 3: Cross multiply
    428,017,132.98x = 640,935,795.06 × 282,008,036.16
  4. Step 4: Simplify right side
    428,017,132.98x = 180,749,044,869,518,816
  5. Step 5: Solve for x
    x = 180,749,044,869,518,816/428,017,132.98
  6. Step 6: Final answer
    x = 422,293,947.93

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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.